{"query":"Claude","count":8,"results":[{"title":"Claude Code 2.1.273 — Added x-claude-code-request-class, x-claude-code-agent-type, x-claude-code-prev-tool-durations, x-claude-code-compaction and x-…","url":"https://github.com/anthropics/claude-code/releases/tag/v2.1.273","source":"Claude Code","category":"Code","publishedAt":"2026-09-15T20:23:03.000Z","summary":"Added x-claude-code-request-class, x-claude-code-agent-type, x-claude-code-prev-tool-durations, x-claude-code-compaction and x-claude-code-context-compacted request headers for LLM gateways; opt in with CLAUDE_CODE_GATEWAY_HINT_HEADERS=1"},{"title":"We announced the deprecation of the Claude Sonnet 4 model (claude-sonnet-4-20250514) and the Claude Opus 4 model (claude-opus-4-20250514), with retire","url":"https://docs.claude.com/en/release-notes/api#april-14-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-04-14T00:00:00.000Z","summary":"We announced the deprecation of the Claude Sonnet 4 model (claude-sonnet-4-20250514) and the Claude Opus 4 model (claude-opus-4-20250514), with retirement on the Claude API scheduled for June 15, 2026. We recommend migrating to Claude Sonnet 4.6 and Claude Opus 4.8 respectively. Read more in model deprecations."},{"title":"We've launched Claude Sonnet 5.5 (claude-sonnet-5-5).","url":"https://docs.claude.com/en/release-notes/api#september-28-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-09-28T00:00:00.000Z","summary":"We've launched Claude Sonnet 5.5 (claude-sonnet-5-5). It's available on the Claude API, Claude in Amazon Bedrock, Claude Platform on AWS, Claude on Google Cloud, and Claude in Microsoft Foundry. For its context window, output limits, and prices, see the Claude Sonnet 5.5 model pa"},{"title":"Mid-conversation system messages are available on Claude Fable 5, Claude Mythos 5, and Claude Opus 4.8, on the Claude API, Claude in Amazon Bedrock, a","url":"https://docs.claude.com/en/release-notes/api#july-15-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-07-15T00:00:00.000Z","summary":"Mid-conversation system messages are available on Claude Fable 5, Claude Mythos 5, and Claude Opus 4.8, on the Claude API, Claude in Amazon Bedrock, and Google Cloud. No beta header is required. This corrects earlier availability notes."},{"title":"We've retired the Claude Sonnet 4 model (claude-sonnet-4-20250514) and the Claude Opus 4 model (claude-opus-4-20250514). All requests to these models ","url":"https://docs.claude.com/en/release-notes/api#june-15-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-06-15T00:00:00.000Z","summary":"We've retired the Claude Sonnet 4 model (claude-sonnet-4-20250514) and the Claude Opus 4 model (claude-opus-4-20250514). All requests to these models will now return an error. We recommend upgrading to Claude Sonnet 4.6 and Claude Opus 4.8 respectively. Researchers can request ongoing access through the External Researcher Access Program."},{"title":"Text generated by Claude Mythos 5, Claude Opus 4.7, and Claude Sonnet 4.6 carries Anthropic’s text watermark on the platforms listed in How Claude…","url":"https://docs.claude.com/en/release-notes/api#november-3-2026","source":"Anthropic (release notes)","category":"Modèles","publishedAt":"2026-11-03T00:00:00.000Z","summary":"Text generated by Claude Mythos 5, Claude Opus 4.7, and Claude Sonnet 4.6 carries Anthropic’s text watermark on the platforms listed in How Claude marks AI-generated content. On Claude Sonnet 4.6, text generated for a request that sets temperature, top_p, or top_k to a non-defaul"},{"title":"We've raised rate limits across the Claude API. Claude Sonnet and Claude Haiku rate limits now match Claude Opus at every usage tier, and usage tiers ","url":"https://docs.claude.com/en/release-notes/api#june-26-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-06-26T00:00:00.000Z","summary":"We've raised rate limits across the Claude API. Claude Sonnet and Claude Haiku rate limits now match Claude Opus at every usage tier, and usage tiers have been consolidated into three: Start, Build, and Scale. Most organizations move to a higher tier, no organization receives lower limits than before, and no action is required. You can view your tier and current limits in the Claude Console."},{"title":"We've launched Claude Fable 5.1 (claude-fable-5-1), the successor to Claude Fable 5 for long-running agentic coding, knowledge work, and research,…","url":"https://docs.claude.com/en/release-notes/api#september-1-2026","source":"Anthropic (release notes)","category":"Recherche","publishedAt":"2026-09-01T00:00:00.000Z","summary":"We've launched Claude Fable 5.1 (claude-fable-5-1), the successor to Claude Fable 5 for long-running agentic coding, knowledge work, and research, alongside Claude Mythos 5.1 (claude-mythos-5-1) for Project Glasswing participants. Both models support a 1M token context window by "}]}