{"id":11948,"date":"2025-02-01T12:49:27","date_gmt":"2025-02-01T12:49:27","guid":{"rendered":"https:\/\/www.yiaho.com\/chatgpt-o1\/"},"modified":"2026-10-27T15:17:25","modified_gmt":"2026-10-27T15:17:25","slug":"chatgpt-o1","status":"publish","type":"page","link":"https:\/\/www.yiaho.com\/en\/chatgpt-o1\/","title":{"rendered":"ChatGPT o1"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"11948\" class=\"elementor elementor-11948 elementor-6428\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3a203cf elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3a203cf\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0995ad3\" data-id=\"0995ad3\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e648902 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e648902\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c618808\" data-id=\"c618808\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-edf93da elementor-widget elementor-widget-heading\" data-id=\"edf93da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Free ChatGPT o1, now upgraded to GPT-5<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-293e4b9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"293e4b9\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-a5f06d6\" data-id=\"a5f06d6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2a1bdb9 elementor-widget elementor-widget-image\" data-id=\"2a1bdb9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-150x150.webp\" class=\"attachment-thumbnail size-thumbnail wp-image-11949\" alt=\"Free ChatGPT o1 online, now running GPT-5\" srcset=\"https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-150x150.webp 150w, https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-300x300.webp 300w, https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-1024x1024.webp 1024w, https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-768x768.webp 768w, https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit-1536x1536.webp 1536w, https:\/\/www.yiaho.com\/wp-content\/uploads\/2025\/07\/o1-openAI-gratuit.webp 2000w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Looking for ChatGPT o1? On Yiaho, the free chatbot now runs GPT-5.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-bb736e1\" data-id=\"bb736e1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e042289 elementor-widget elementor-widget-shortcode\" data-id=\"e042289\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><div class='mwai-chatbot-container' data-params='{&quot;aiName&quot;:&quot;GPT-5:&quot;,&quot;userName&quot;:&quot;You:&quot;,&quot;guestName&quot;:&quot;You:&quot;,&quot;aiAvatar&quot;:false,&quot;aiAvatarUrl&quot;:&quot;chat-openai.svg&quot;,&quot;textSend&quot;:&quot;Send&quot;,&quot;textClear&quot;:&quot;Clear&quot;,&quot;imageUpload&quot;:true,&quot;fileUpload&quot;:true,&quot;multiUpload&quot;:false,&quot;maxUploads&quot;:1,&quot;fileUploads&quot;:1,&quot;mode&quot;:&quot;chat&quot;,&quot;textInputPlaceholder&quot;:&quot;Write your message...&quot;,&quot;textEmptyHint&quot;:&quot;&quot;,&quot;textInputMaxLength&quot;:8000,&quot;textCompliance&quot;:&quot;&quot;,&quot;startSentence&quot;:&quot;Hello! How can I help you?&quot;,&quot;localMemory&quot;:true,&quot;themeId&quot;:&quot;chatgpt&quot;,&quot;window&quot;:false,&quot;icon&quot;:&quot;&quot;,&quot;iconText&quot;:&quot;&quot;,&quot;iconTextDelay&quot;:1,&quot;iconTextDuration&quot;:0,&quot;iconTextOnce&quot;:&quot;session&quot;,&quot;iconAlt&quot;:&quot;AI Engine Chatbot&quot;,&quot;iconPosition&quot;:&quot;bottom-right&quot;,&quot;centerOpen&quot;:false,&quot;width&quot;:&quot;&quot;,&quot;openDelay&quot;:&quot;&quot;,&quot;iconBubble&quot;:false,&quot;windowAnimation&quot;:&quot;zoom&quot;,&quot;fullscreen&quot;:false,&quot;copyButton&quot;:true,&quot;pdfButton&quot;:true,&quot;headerSubtitle&quot;:&quot;Discuss with&quot;,&quot;containerType&quot;:&quot;standard&quot;,&quot;headerType&quot;:&quot;standard&quot;,&quot;messagesType&quot;:&quot;standard&quot;,&quot;inputType&quot;:&quot;standard&quot;,&quot;footerType&quot;:&quot;standard&quot;}' data-system='{&quot;botId&quot;:&quot;chatbot-o6k271&quot;,&quot;customId&quot;:null,&quot;userData&quot;:null,&quot;sessionId&quot;:null,&quot;restNonce&quot;:null,&quot;contextId&quot;:null,&quot;pluginUrl&quot;:&quot;https:\\\/\\\/www.yiaho.com\\\/wp-content\\\/plugins\\\/ai-engine-pro&quot;,&quot;restUrl&quot;:&quot;https:\\\/\\\/www.yiaho.com\\\/en\\\/wp-json&quot;,&quot;stream&quot;:false,&quot;debugMode&quot;:false,&quot;eventLogs&quot;:false,&quot;speech_recognition&quot;:true,&quot;speech_synthesis&quot;:false,&quot;typewriter&quot;:false,&quot;crossSite&quot;:false,&quot;texts&quot;:{&quot;Ask me anything!&quot;:&quot;Ask me anything!&quot;,&quot;Jump to the latest message&quot;:&quot;Jump to the latest message&quot;,&quot;Try again&quot;:&quot;Try again&quot;,&quot;Conversation cleared.&quot;:&quot;Conversation cleared.&quot;,&quot;Undo&quot;:&quot;Undo&quot;,&quot;Done!&quot;:&quot;Done!&quot;,&quot;New Chat&quot;:&quot;New Chat&quot;,&quot;No messages yet&quot;:&quot;No messages yet&quot;,&quot;Rename&quot;:&quot;Rename&quot;,&quot;Delete&quot;:&quot;Delete&quot;,&quot;Your text was cut at %d characters.&quot;:&quot;Your text was cut at %d characters.&quot;,&quot;Hold to Talk&quot;:&quot;Hold to Talk&quot;,&quot;Release to Send&quot;:&quot;Release to Send&quot;,&quot;Press Space to talk&quot;:&quot;Press Space to talk&quot;,&quot;Start session to upload images&quot;:&quot;Start session to upload images&quot;,&quot;Usage limit exceeded&quot;:&quot;Usage limit exceeded&quot;,&quot;Connection failed&quot;:&quot;Connection failed&quot;,&quot;Connection failed. Please check your network and try again.&quot;:&quot;Connection failed. Please check your network and try again.&quot;,&quot;Connection lost. Reconnecting...&quot;:&quot;Connection lost. Reconnecting...&quot;,&quot;Connection lost while uploading image. Please try again.&quot;:&quot;Connection lost while uploading image. Please try again.&quot;,&quot;Connection timeout: The server took too long to respond.&quot;:&quot;Connection timeout: The server took too long to respond.&quot;,&quot;Could not start realtime session.&quot;:&quot;Could not start realtime session.&quot;,&quot;An error occurred while starting the realtime session.&quot;:&quot;An error occurred while starting the realtime session.&quot;,&quot;An error occurred while processing your request. Please try again.&quot;:&quot;An error occurred while processing your request. Please try again.&quot;,&quot;An error occurred while committing the stats.&quot;:&quot;An error occurred while committing the stats.&quot;,&quot;An error occurred while committing the discussion.&quot;:&quot;An error occurred while committing the discussion.&quot;,&quot;An error occurred while executing the function.&quot;:&quot;An error occurred while executing the function.&quot;,&quot;Authentication failed: Your session has expired. Please refresh the page.&quot;:&quot;Authentication failed: Your session has expired. Please refresh the page.&quot;,&quot;Error uploading image. Please try again.&quot;:&quot;Error uploading image. Please try again.&quot;,&quot;Failed to access microphone: &quot;:&quot;Failed to access microphone: &quot;,&quot;Failed to access microphone. Please ensure microphone permissions are granted and try again.&quot;:&quot;Failed to access microphone. Please ensure microphone permissions are granted and try again.&quot;,&quot;Failed to establish connection with OpenAI servers. Please try again.&quot;:&quot;Failed to establish connection with OpenAI servers. Please try again.&quot;,&quot;Failed to read image file.&quot;:&quot;Failed to read image file.&quot;,&quot;Failed to send image. Please try again.&quot;:&quot;Failed to send image. Please try again.&quot;,&quot;Failed to upload image.&quot;:&quot;Failed to upload image.&quot;,&quot;Image file size must be less than 20MB.&quot;:&quot;Image file size must be less than 20MB.&quot;,&quot;Internal server error: An unexpected error occurred. Please try again.&quot;:&quot;Internal server error: An unexpected error occurred. Please try again.&quot;,&quot;Invalid API key: Please check your OpenAI API key in settings.&quot;:&quot;Invalid API key: Please check your OpenAI API key in settings.&quot;,&quot;Invalid request: The message format was not recognized by the server.&quot;:&quot;Invalid request: The message format was not recognized by the server.&quot;,&quot;MediaDevices API not available. Please ensure you are using HTTPS and a modern browser.&quot;:&quot;MediaDevices API not available. Please ensure you are using HTTPS and a modern browser.&quot;,&quot;Model overloaded: The AI model is currently experiencing high demand.&quot;:&quot;Model overloaded: The AI model is currently experiencing high demand.&quot;,&quot;Network error: Failed to establish connection to the AI service.&quot;:&quot;Network error: Failed to establish connection to the AI service.&quot;,&quot;Please select an image file.&quot;:&quot;Please select an image file.&quot;,&quot;Please start a session before uploading images.&quot;:&quot;Please start a session before uploading images.&quot;,&quot;Quota exceeded: You have reached your usage limit for this period.&quot;:&quot;Quota exceeded: You have reached your usage limit for this period.&quot;,&quot;Rate limit exceeded: Too many requests. Please try again later.&quot;:&quot;Rate limit exceeded: Too many requests. Please try again later.&quot;,&quot;Service unavailable: The AI service is temporarily down for maintenance.&quot;:&quot;Service unavailable: The AI service is temporarily down for maintenance.&quot;},&quot;actions&quot;:[],&quot;blocks&quot;:[],&quot;shortcuts&quot;:[]}' data-theme='{&quot;type&quot;:&quot;internal&quot;,&quot;name&quot;:&quot;ChatGPT&quot;,&quot;themeId&quot;:&quot;chatgpt&quot;,&quot;settings&quot;:{&quot;backgroundPrimaryColor&quot;:&quot;#165d8ff9&quot;,&quot;backgroundSecondaryColor&quot;:&quot;#164778fc&quot;,&quot;fontSize&quot;:&quot;16px&quot;,&quot;spacing&quot;:&quot;15px&quot;,&quot;iconTextBackgroundColor&quot;:&quot;#f8f9fc&quot;,&quot;fontColor&quot;:&quot;#ffffff&quot;,&quot;borderColor&quot;:&quot;#165d8ff9&quot;,&quot;bubbleColor&quot;:&quot;#164778fc&quot;,&quot;backgroundHeaderColor&quot;:&quot;#165d8ff9&quot;},&quot;style&quot;:&quot;&quot;,&quot;cssUrl&quot;:&quot;https:\\\/\\\/www.yiaho.com\\\/wp-content\\\/plugins\\\/ai-engine-pro\\\/themes\\\/chatgpt.css&quot;}'><\/div><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-58c6f6f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"58c6f6f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6593265\" data-id=\"6593265\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-84a0ed3 elementor-widget-divider--view-line elementor-invisible elementor-widget elementor-widget-divider\" data-id=\"84a0ed3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeIn&quot;,&quot;_animation_delay&quot;:0}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b53e9d1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b53e9d1\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-39ddb7a\" data-id=\"39ddb7a\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fc2ac03 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fc2ac03\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-465d68e\" data-id=\"465d68e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fdfa2cf elementor-widget elementor-widget-heading\" data-id=\"fdfa2cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">ChatGPT o1 for free? Use its successor, GPT-5<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d8e456d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d8e456d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e789dcf\" data-id=\"e789dcf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c0e3157 elementor-widget elementor-widget-text-editor\" data-id=\"c0e3157\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #ffffff;\"><strong>Looking for ChatGPT o1 for free? OpenAI has since replaced o1 with newer models, so the chatbot on this page now runs GPT-5. It\u2019s free, unlimited and needs no account:<\/strong> type your question above and you\u2019re good to go.<\/span><\/p>\n<h2><span style=\"color: #ffffff;\">What was OpenAI o1?<\/span><\/h2>\n<p><span style=\"color: #ffffff;\">OpenAI introduced o1 in September 2024 (first as &#8220;o1-preview&#8221;, then as the full o1 in December). It was OpenAI\u2019s first &#8220;reasoning&#8221; model: instead of answering straight away, it spent time working through a problem step by step before replying. That made it much better than GPT-4o at math, science and coding, at the cost of slower answers.<\/span><\/p>\n<h2><span style=\"color: #ffffff;\">What happened to o1?<\/span><\/h2>\n<p><span style=\"color: #ffffff;\">OpenAI kept improving its reasoning models: o3 and o4-mini followed in April 2025. Then, in August 2025, GPT-5 brought quick answers and deeper reasoning together in a single model and became ChatGPT\u2019s default. Since then, OpenAI has also launched the GPT-6 family. That\u2019s why this page now uses GPT-5: offering o1 today would mean giving you an older model.<\/span><\/p>\n<h2><span style=\"color: #ffffff;\">How to get well-reasoned answers<\/span><\/h2>\n<p><span style=\"color: #ffffff;\">o1 was popular for hard problems. To get the most out of the chatbot on this page for that kind of question:<\/span><\/p>\n<ul>\n<li><span style=\"color: #ffffff;\"><strong>Give all the data:<\/strong> the full problem statement, the numbers, the constraints.<\/span><\/li>\n<li><span style=\"color: #ffffff;\"><strong>Ask it to reason step by step<\/strong> and to show its working.<\/span><\/li>\n<li><span style=\"color: #ffffff;\"><strong>Ask it to check its answer<\/strong>, or to solve the problem a second way.<\/span><\/li>\n<li><span style=\"color: #ffffff;\"><strong>Break long problems down:<\/strong> one part at a time works better than everything at once.<\/span><\/li>\n<li><span style=\"color: #ffffff;\"><strong>Stay critical:<\/strong> check results that matter, especially in math and code.<\/span><\/li>\n<\/ul>\n<h2><span style=\"color: #ffffff;\">Free and unlimited, for real<\/span><\/h2>\n<p><span style=\"color: #ffffff;\">On Yiaho, there\u2019s no message counter, no account and nothing to install, on a computer or a phone. Yiaho is funded by ads and isn\u2019t affiliated with OpenAI; we use OpenAI\u2019s official API. For OpenAI\u2019s latest generation, try <a style=\"color: #ffffff; text-decoration: underline;\" href=\"https:\/\/www.yiaho.com\/en\/free-gpt-6\/\">GPT-6 Luna<\/a>, which is free on Yiaho too, or our <a style=\"color: #ffffff; text-decoration: underline;\" href=\"https:\/\/www.yiaho.com\/en\/free-chat-gpt\/\">free ChatGPT<\/a> page.<\/span><\/p>\n<h2><span style=\"color: #ffffff;\">ChatGPT o1 FAQ<\/span><\/h2>\n<h3><span style=\"color: #ffffff;\">Can I still use ChatGPT o1 for free?<\/span><\/h3>\n<p><span style=\"color: #ffffff;\">Not on Yiaho: the chatbot on this page now runs GPT-5, OpenAI\u2019s newer model. It\u2019s free and unlimited.<\/span><\/p>\n<h3><span style=\"color: #ffffff;\">Is GPT-5 better than o1?<\/span><\/h3>\n<p><span style=\"color: #ffffff;\">GPT-5 is a newer model that combines fast answers and step-by-step reasoning in one system. For everyday questions it\u2019s faster than o1 was, and you can ask it to reason carefully when a problem is hard.<\/span><\/p>\n<h3><span style=\"color: #ffffff;\">Do I need an account?<\/span><\/h3>\n<p><span style=\"color: #ffffff;\">No. Just type your question in the chat box at the top of the page.<\/span><\/p>\n<h3><span style=\"color: #ffffff;\">Can I download ChatGPT o1?<\/span><\/h3>\n<p><span style=\"color: #ffffff;\">There\u2019s nothing to download here: the chatbot works in your browser. Be wary of websites offering a &#8220;ChatGPT o1 download&#8221;.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Free ChatGPT o1, now upgraded to GPT-5 ChatGPT o1 for free? Use its successor, GPT-5 Looking for ChatGPT o1 for free? OpenAI has since replaced o1 with newer models, so the chatbot on this page now runs GPT-5. It\u2019s free, unlimited and needs no account: type your question above and you\u2019re good to go. What&hellip;&nbsp;<a href=\"https:\/\/www.yiaho.com\/en\/chatgpt-o1\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">ChatGPT o1<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-templates\/template-pagebuilder-full-width.php","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":100,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","footnotes":""},"class_list":["post-11948","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ChatGPT o1 Free? Use GPT-5 Free and Unlimited on Yiaho<\/title>\n<meta name=\"description\" content=\"Looking for ChatGPT o1 for free? OpenAI has replaced o1 with newer models. On Yiaho, the free chatbot runs GPT-5, unlimited and with no sign-up.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.yiaho.com\/en\/chatgpt-o1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ChatGPT o1 Free? Use GPT-5 Free and Unlimited on Yiaho\" \/>\n<meta property=\"og:description\" content=\"Looking for ChatGPT o1 for free? OpenAI has replaced o1 with newer models. 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