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8 posts about Claude API from Simon Carter.
Anthropic has formally deprecated claude-mythos-preview with a June 30 2026 retirement date, directing developers to migrate to claude-mythos-5 — which is currently suspended.
Anthropic launches Claude Fable 5 with a 1M-token context window, $10/$50 pricing, and a safety-classifier fallback — plus a restricted Mythos 5 for Project Glasswing partners.
Anthropic's new Swift package lets iOS/macOS 27 developers use Claude as a drop-in server-side model via Apple's LanguageModelSession API.
Anthropic's vault-stored environment variables let Claude Managed Agents authenticate CLI tools without the API key ever entering the agent's context window.
Anthropic has deprecated claude-opus-4-1-20250805 with a retirement date of August 5, 2026. Opus 4.8 is the recommended replacement.
Anthropic now bills zero for API refusals with no output, and the advisor tool gets a max_tokens cap to control cost and latency in agentic workloads.
Anthropic ships three Claude Managed Agents platform updates giving enterprise developers more infrastructure control, runtime flexibility, and prompt-cache transparency.
Anthropic retires claude-sonnet-4-20250514 and claude-opus-4-20250514 from the API on June 15, 2026. Pinned version strings will error. Here's how to migrate.