# Claude Opus 5.5

Claude Opus 5.5 est un modèle de Anthropic, sorti le 2026-09-22. La fenêtre de contexte est de 1 000 000 jetons. La sortie est limitée à 128 000 jetons. Le tarif par million de jetons est de $4,00 en entrée et de $20,00 en sortie.

- Éditeur: Anthropic
- Id: claude-opus-5-5
- Selon des informations: 2026-09-20T15:54:59.132Z
- Disponible: 2026-09-22T00:00:00.000Z
- Détection: 2026-09-22T16:25:42.506Z
  - [lien de référence](https://api.anthropic.com/v1/models)
- Statut: Disponible
- Disponible: 2026-09-22
  - [lien de référence](https://www.anthropic.com/claude-opus-5-5)
- Annonce officielle: 2026-09-22
  - [lien de référence](https://www.anthropic.com/claude-opus-5-5)
- Canonique: https://alexgetman.com/fr/models/anthropic/claude-opus-5-5/

## Questions

### Quelle est la fenêtre de contexte de Claude Opus 5.5 ?

La fenêtre de contexte est de 1 000 000 jetons. La sortie est limitée à 128 000 jetons.

### Combien coûte Claude Opus 5.5 ?

Le tarif par million de jetons est de $4,00 en entrée et de $20,00 en sortie. L'entrée en cache coûte $0,20 par million.

### Quand Claude Opus 5.5 est-il sorti ?

Le 2026-09-22.

## Chronologie

- 2026-09-20T15:54:59.132Z · [Alex Getman](https://alexgetman.com/438/new-claude-opus-drops-early-next-week/)
> 🚨 New Claude Opus drops early next week
> 
> It will likely be called Opus 5.5
> 
> $4/$20 input/output pricing, 20% cheaper than Opus 5
- 2026-09-22T16:30:45.162Z · [Alex Getman](https://alexgetman.com/448/claude-opus-5-5-is-out/)
> 🚨 Claude Opus 5.5 is out!
- 2026-09-22T17:36:48.141Z · [Alex Getman](https://alexgetman.com/449/opus-5-5-beats-fable-and-astra/)
> Opus 5.5 beats Fable and Astra
- 2026-09-22T17:37:33.000Z · [Alex Getman](https://alexgetman.com/450/opus-5-5-is-much-cheaper-than-opus-5/)
> Opus 5.5 is much cheaper than Opus 5
- 2026-09-22T17:41:09.417Z · [Alex Getman](https://alexgetman.com/453/opus-5-5-scores-58-points-and-takes-the-top-spot-in-the-aa-intelligence-index/)
> Opus 5.5 scores 58 points and takes the top spot in the AA Intelligence Index
- 2026-09-22T17:42:17.789Z · [Alex Getman](https://alexgetman.com/454/claude-opus-5-5-owns-almost-the-entire-pareto-frontier/)
> Claude Opus 5.5 owns almost the entire Pareto frontier
- 2026-09-28T18:23:32.385Z · [Alex Getman](https://alexgetman.com/473/sonnet-5-5-benchmarks-are-out/)
> 🚨 Sonnet 5.5 benchmarks are out
> 
> It crushes Sonnet 5, goes toe-to-toe with Opus 5.5, and beats GPT-6 Sol across most shared benchmarks.
- 2026-09-28T18:25:26.909Z · [Alex Getman](https://alexgetman.com/474/sonnet-5-5-max-even-beats-opus-5-5-max-on-terminal-bench-while-staying-close-to-/)
> Sonnet 5.5 Max even beats Opus 5.5 Max on Terminal-Bench, while staying close to Opus across the rest. And against GPT Sol, the price/performance gap looks pretty brutal.
- 2026-09-30T20:45:40.364Z · [Alex Getman](https://alexgetman.com/492/gemini-4-argon-sits-almost-right-on-the-pareto-frontier-for-price-vs-intelligenc/)
> 🚨 Gemini 4 Argon sits almost right on the Pareto frontier for price vs intelligence, next to Claude Opus 5.5 Medium and High
- 2026-10-12T19:34:51.126Z · [Alex Getman](https://alexgetman.com/512/meta-just-released-muse-wonder/)
> Meta just released Muse Wonder
> 
> According to the benchmarks, it's right up there with GPT 6 Astra and Claude Opus 5.5.
> 
> The results look impressive, but the model might be heavily optimized for benchmarks. It's still unclear how well it actually performs in real world use.
> 
> And yeah, most of you probably won't be able to try it through a subscription, since Muse is still only available in the US.
- 2026-10-15T19:30:51.934Z · [Anthropic · SDK releases](https://platform.claude.com/docs/en/release-notes/overview)
> Fast mode is out of research preview for Claude Opus 5.5, and you no longer need to request access
- 2026-10-23T17:20:07.567Z · [Alex Getman](https://alexgetman.com/530/kimi-k3-1-pro-benchmarks-are-out/)
> Kimi K3.1 Pro benchmarks are out!
> 
> Of all these benchmarks, I trust Terminal-Bench 4.0 the most.
> 
> And the results are impressive:
> 
> Kimi K3.1 Pro scores 65.7, just 0.7 points behind the leader, Opus 5.5, while outperforming GPT-6 Astra by 7.5 points.
- 2026-11-09T19:05:14.657Z · [Alex Getman](https://alexgetman.com/556/fable-5-2-beats-opus-5-5-in-nearly-every-benchmark/)
> Fable 5.2 beats Opus 5.5 in nearly every benchmark
- 2026-11-13T17:12:46.898Z · [Anthropic · official articles](https://www.anthropic.com/claude-opus-5-5)
- 2026-11-13T17:12:46.898Z · [Anthropic · official articles](https://www.anthropic.com/claude-sonnet-5-5)
- 2026-11-13T17:43:43.996Z · [Anthropic · official articles](https://www.anthropic.com/news/cyber-verification-program)
- 2026-11-13T17:54:07.508Z · [Anthropic · official articles](https://claude.com/blog/claude-opus-5-5-built-for-coding-sessions-that-use-more-context)
> This post will dive into the mechanics of what makes Opus 5.5 cost effective for how developers are coding today (and likely tomorrow)
- 2026-11-13T20:43:49.805Z · [Anthropic · official articles](https://claude.com/blog/using-claude-opus-5-5-as-your-daily-driver-for-knowledge-work)
> For longer analysis, switch to Opus 5.5

## Liens de référence

- 2026-09-22T16:25:42.506Z: Entrée du catalogue · Anthropic API · `claude-opus-5-5`

## Liens de référence

- [editorial](https://alexgetman.com/438/new-claude-opus-drops-early-next-week/)
- [editorial](https://alexgetman.com/448/claude-opus-5-5-is-out/)
- [editorial](https://alexgetman.com/449/opus-5-5-beats-fable-and-astra/)
- [editorial](https://alexgetman.com/450/opus-5-5-is-much-cheaper-than-opus-5/)
- [editorial](https://alexgetman.com/453/opus-5-5-scores-58-points-and-takes-the-top-spot-in-the-aa-intelligence-index/)
- [editorial](https://alexgetman.com/454/claude-opus-5-5-owns-almost-the-entire-pareto-frontier/)
- [Alex Getman](https://alexgetman.com/473/sonnet-5-5-benchmarks-are-out/)
- [editorial](https://alexgetman.com/474/sonnet-5-5-max-even-beats-opus-5-5-max-on-terminal-bench-while-staying-close-to-/)
- [editorial](https://alexgetman.com/492/gemini-4-argon-sits-almost-right-on-the-pareto-frontier-for-price-vs-intelligenc/)
- [Alex Getman](https://alexgetman.com/512/meta-just-released-muse-wonder/)
- [editorial](https://alexgetman.com/530/kimi-k3-1-pro-benchmarks-are-out/)
- [Alex Getman](https://alexgetman.com/556/fable-5-2-beats-opus-5-5-in-nearly-every-benchmark/)
- [anthropic](https://api.anthropic.com/v1/models)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [anthropic-articles](https://claude.com/blog/claude-opus-5-5-built-for-coding-sessions-that-use-more-context)
- [anthropic-articles](https://claude.com/blog/using-claude-opus-5-5-as-your-daily-driver-for-knowledge-work)
- [Command Code · models](https://commandcode.ai/docs/reference/cli/models)
- [Vertex AI · Model Garden](https://console.cloud.google.com/vertex-ai/publishers/anthropic/model-garden/claude-opus-5-5)
- [Anthropic API](https://docs.anthropic.com/en/docs/about-claude/models)
- [models.dev · catalogue](https://models.dev/#claude-opus-5-5)
- [models.dev · catalogue](https://models.dev/#claude-opus-5.5)
- [OpenCode · discovery](https://opencode.ai/data/anthropic/claude-opus-5-5)
- [OpenCode Zen · models](https://opencode.ai/zen)
- [OpenRouter](https://openrouter.ai/anthropic/claude-opus-5.5)
- [OpenRouter](https://openrouter.ai/anthropic/claude-opus-5.5:batch)
- [Anthropic · deprecations](https://platform.claude.com/docs/en/about-claude/model-deprecations)
- [anthropic-pricing](https://platform.claude.com/docs/en/about-claude/pricing)
- [review](https://platform.claude.com/docs/en/models/opus-5-5/overview)
- [anthropic-model-index](https://platform.claude.com/docs/en/models/overview)
- [Anthropic · SDK releases](https://platform.claude.com/docs/en/release-notes/overview)
- [Claude Docs](https://platform.claude.com/docs/en/release-notes/system-prompts/claude-opus-5-5)
- [Vercel AI Gateway](https://vercel.com/ai-gateway)
- [anthropic-articles](https://www.anthropic.com/claude-opus-5-5)
- [anthropic-articles](https://www.anthropic.com/claude-sonnet-5-5)
- [anthropic-articles](https://www.anthropic.com/news/cyber-verification-program)
- [DesignArena · uicomponent](https://www.designarena.ai/leaderboard/ui-components)
- [DesignArena · website](https://www.designarena.ai/leaderboard/website)
- [Claude Code · model ids](https://www.npmjs.com/package/@anthropic-ai/claude-code/v/2.1.280)

## Signaux

- [Claude Opus 5.5 repéré sur Anthropic API](https://alexgetman.com/fr/signals/2026/09/23/new-page-claude-opus-5-5/)
- [Anthropic lance Claude Opus 5.5](https://alexgetman.com/fr/signals/2026/09/22/claude-opus-5-5/)