{"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":"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":"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 "},{"title":"Claude — Elevated errors for Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other models","url":"https://stspg.io/9w9f5y5k2vwx","source":"status.claude.com","category":"Produit","publishedAt":"2026-07-25T22:08:41.677Z","summary":"Résolu · We are investigating elevated errors on requests to Claude Fable 5, Claude Sonnet 5, Claude Haiku 4.5, and other Claude models. We will provide an update as soon as possible."},{"title":"We've launched Claude Opus 5 (claude-opus-5), a step-change improvement over Claude Opus 4.8.","url":"https://docs.claude.com/en/release-notes/api#july-24-2026","source":"Anthropic (release notes)","category":"Produit","publishedAt":"2026-07-24T00:00:00.000Z","summary":"We've launched Claude Opus 5 (claude-opus-5), a step-change improvement over Claude Opus 4.8. Claude Opus 5 supports a 1M token context window (both the default and the maximum), 128k max output tokens, and thinking on by default, at $5 / $25 per MTok, the same pricing as Claude "}]}