--- title: OpenAI introduces ‘Ultrafast,’ a new mode that makes... description: OpenAI launched a preview mode called Ultrafast that runs its GPT-5.6 Sol model at up to 14x normal speed, generating as many as 750 output tokens per second.... canonical: https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed | daily.dev og:description: OpenAI launched a preview mode called Ultrafast that runs its GPT-5.6 Sol model at up to 14x normal speed, generating as many as 750 output tokens per second.... og:url: https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd og:image: https://api.daily.dev/og/posts/DHxnEVSrd.png og:image:alt: OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed **[TechCrunch](https://daily.dev/sources/tc)** · 2 min read · 0 upvotes · 0 comments ## Summary OpenAI launched a preview mode called Ultrafast that runs its GPT-5.6 Sol model at up to 14x normal speed, generating as many as 750 output tokens per second. The feature is powered by a partnership with chipmaker Cerebras and is aimed at enterprise workflows like incident response, customer support, financial analysis, and e-commerce. It's currently available to a small group of customers, with wider access planned as capacity grows. Anthropic offers a comparable but slower fast mode for Claude. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is OpenAI's Ultrafast mode for GPT-5.6 Sol? Ultrafast is a preview mode from OpenAI that runs the GPT-5.6 Sol model at up to 14 times the speed of standard processing, generating up to 750 output tokens per second. It is powered by a partnership with chipmaker Cerebras and targets enterprise use cases like incident response, customer service, financial analysis, and e-commerce. Access is currently limited to a small group of customers. _Enterprise teams evaluating fast-inference LLM options can track releases like this one on daily.dev._ ### How does OpenAI's Ultrafast mode compare to Anthropic's Claude fast mode? Ultrafast delivers significantly higher throughput than Claude's fast mode, according to OpenAI, which claims speeds Anthropic's offering does not match. OpenAI's Ultrafast reaches up to 750 output tokens per second at 14x standard speed, while Claude's fast mode, documented on Anthropic's platform, provides accelerated but comparatively slower responses. _Developers comparing LLM speed tiers across vendors can follow updates like this on daily.dev._ ## Similar posts on daily.dev - [GPT-5.6 Sol: What OpenAI's New Flagship Model Means for Developer Workflows](https://daily.dev/posts/gpt-5-6-sol-what-openai-s-new-flagship-model-means-for-developer-workflows-uqyq6plz2) · SitePoint · 1 upvotes · 0 comments --- Tags: [#ai-inference](https://daily.dev/tags/ai-inference), [#anthropic](https://daily.dev/tags/anthropic), [#cerebras](https://daily.dev/tags/cerebras), [#openai](https://daily.dev/tags/openai) [View this post on daily.dev](https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed","url":"https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd"},"datePublished":"2026-08-13T19:27:50.083Z","dateModified":"2026-10-14T02:24:02.227Z","description":"OpenAI launched a preview mode called Ultrafast that runs its GPT-5.6 Sol model at up to 14x normal speed, generating as many as 750 output tokens per second....","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fb36f5fda174e92fc9e8857e0947a2c3?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fb36f5fda174e92fc9e8857e0947a2c3?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"TechCrunch","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"TechCrunch","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tc","url":"https://daily.dev/sources/tc"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai-inference,anthropic,cerebras,openai","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"TechCrunch","item":"https://daily.dev/sources/tc"},{"@type":"ListItem","position":3,"name":"OpenAI introduces ‘Ultrafast,’ a new mode that makes GPT-5.6 Sol work at 14x the speed"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/openai-introduces-ultrafast-a-new-mode-that-makes-gpt-5-6-sol-work-at-14x-the-speed-dhxnevsrd#faq","mainEntity":[{"@type":"Question","name":"What is OpenAI's Ultrafast mode for GPT-5.6 Sol?","acceptedAnswer":{"@type":"Answer","text":"Ultrafast is a preview mode from OpenAI that runs the GPT-5.6 Sol model at up to 14 times the speed of standard processing, generating up to 750 output tokens per second. 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