--- title: Anthropic’s cheaper Opus arrives weeks before its IPO description: Anthropic released Claude Opus 5.5 with a price cut to $4/$20 per million input/output tokens, down from $5/$25 for Opus 5, marking the first Opus price... canonical: https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Anthropic’s cheaper Opus arrives weeks before its IPO | daily.dev og:description: Anthropic released Claude Opus 5.5 with a price cut to $4/$20 per million input/output tokens, down from $5/$25 for Opus 5, marking the first Opus price... og:url: https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff og:image: https://api.daily.dev/og/posts/tkxHS8Hff.png og:image:alt: Anthropic’s cheaper Opus arrives weeks before its IPO 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. # Anthropic’s cheaper Opus arrives weeks before its IPO **[The Next Web](https://daily.dev/sources/tnw)** · 3 min read · 0 upvotes · 0 comments ## Summary Anthropic released Claude Opus 5.5 with a price cut to $4/$20 per million input/output tokens, down from $5/$25 for Opus 5, marking the first Opus price decrease. The model performs similarly to the pricier Fable 5.1 on most tasks, targets long-running agentic coding with a one-million-token context window, and adds third-party safety evaluation from METR and Frontier Design plus a new biology risk classifier. The release comes as Anthropic prepares for a Nasdaq IPO filed confidentially at $965B, and follows customer migration to cheaper models, including Harvey building its own model on a Chinese open-weight base. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How much does Claude Opus 5.5 cost per million tokens compared to Opus 5? Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens, down from $5 and $25 for Opus 5. This marks the first price cut to an Opus model; Opus 5 had launched in July at the same price as its predecessor. Cache reads cost $0.20, and batch processing runs at half price. _Track shifting LLM pricing like this on daily.dev before locking in a model choice._ ### What third-party evaluators tested Claude Opus 5.5 before release? METR and Frontier Design tested Claude Opus 5.5 before its release, according to Anthropic. The model carries safeguards similar to Fable's, including a new biology risk classifier alongside the existing cybersecurity classifier, adaptive thinking that cannot be disabled, and a default effort level lowered from high to medium. _Follow how AI labs handle model safety evaluation via daily.dev when assessing which provider to trust._ ### Why did Anthropic cut prices on its Opus model line for the first time? Customers were shifting to cheaper alternatives, including legal startup Harvey, valued at $15.6B, which built its own model on a Chinese open-weight base in August to replace the models it was renting. Anthropic's price cut on Opus 5.5 comes weeks before its Nasdaq listing, having filed confidentially at a $965B valuation. _Compare frontier model costs on daily.dev when deciding whether to switch providers._ ## Similar posts on daily.dev - [Anthropic’s Opus 5 is almost Fable 5](https://daily.dev/posts/anthropic-s-opus-5-is-almost-fable-5-vlen80a1c) · The New Stack · 9 upvotes · 2 comments --- Tags: [#llm](https://daily.dev/tags/llm), [#ai-coding](https://daily.dev/tags/ai-coding), [#anthropic](https://daily.dev/tags/anthropic), [#ai-regulation](https://daily.dev/tags/ai-regulation) [View this post on daily.dev](https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff) ```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":"Anthropic’s cheaper Opus arrives weeks before its IPO","url":"https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff"},"datePublished":"2026-09-22T17:31:32.025Z","dateModified":"2026-09-22T18:20:01.303Z","description":"Anthropic released Claude Opus 5.5 with a price cut to $4/$20 per million input/output tokens, down from $5/$25 for Opus 5, marking the first Opus price...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e1c09642fdcb1a0b5f2c7eb6c4755954?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e1c09642fdcb1a0b5f2c7eb6c4755954?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"The Next Web","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":"The Next Web","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/tnw","url":"https://daily.dev/sources/tnw"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"llm,ai-coding,anthropic,ai-regulation","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"The Next Web","item":"https://daily.dev/sources/tnw"},{"@type":"ListItem","position":3,"name":"Anthropic’s cheaper Opus arrives weeks before its IPO"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/anthropic-s-cheaper-opus-arrives-weeks-before-its-ipo-tkxhs8hff#faq","mainEntity":[{"@type":"Question","name":"How much does Claude Opus 5.5 cost per million tokens compared to Opus 5?","acceptedAnswer":{"@type":"Answer","text":"Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens, down from $5 and $25 for Opus 5. This marks the first price cut to an Opus model; Opus 5 had launched in July at the same price as its predecessor. Cache reads cost $0.20, and batch processing runs at half price. Track shifting LLM pricing like this on daily.dev before locking in a model choice."}},{"@type":"Question","name":"What third-party evaluators tested Claude Opus 5.5 before release?","acceptedAnswer":{"@type":"Answer","text":"METR and Frontier Design tested Claude Opus 5.5 before its release, according to Anthropic. The model carries safeguards similar to Fable's, including a new biology risk classifier alongside the existing cybersecurity classifier, adaptive thinking that cannot be disabled, and a default effort level lowered from high to medium. Follow how AI labs handle model safety evaluation via daily.dev when assessing which provider to trust."}},{"@type":"Question","name":"Why did Anthropic cut prices on its Opus model line for the first time?","acceptedAnswer":{"@type":"Answer","text":"Customers were shifting to cheaper alternatives, including legal startup Harvey, valued at $15.6B, which built its own model on a Chinese open-weight base in August to replace the models it was renting. Anthropic's price cut on Opus 5.5 comes weeks before its Nasdaq listing, having filed confidentially at a $965B valuation. Compare frontier model costs on daily.dev when deciding whether to switch providers."}}]} ```