🚨 Breaking
- Claude Opus 4.8 launch (May 28 2026) – New model
claude-opus-4-8ships with a default 1 M token context window (200 k on Microsoft Foundry) and 128 k max output tokens. It replaces Opus 4.7 on the Claude API, Amazon Bedrock, and Vertex AI. Docs - Model retirements (April 14 2026) – Anthropic announced the deprecation of
claude-sonnet-4-20250514andclaude-opus-4-20250514. Both will be retired on June 15 2026. Production code still pointing at these identifiers will receive errors after that date. Docs
🗑️ Dépréciations
- Claude Sonnet 4 and Claude Opus 4 are scheduled for removal on June 15 2026. The recommended replacements are Claude Sonnet 4.6 and Claude Opus 4.8 respectively. Update any model references, SDK config files, or environment variables now to avoid runtime failures. Details
💰 Pricing
- No pricing announcements or rate‑limit changes were published today.
🆕 Nouveautés
- Claude Opus 4.8 – Besides the larger context window, it retains the full toolset of Opus 4.7. Consider it for any workloads that need longer context or higher output length.
- goose v1.37.0 – Adds an xAI SuperGrok OAuth subscription provider and exposes raw provider‑supported models over ACP, expanding integration options for multi‑provider stacks. Release notes
💡 Conseil du jour
Action today: Search your codebase for claude-sonnet-4-20250514 and claude-opus-4-20250514 model identifiers. Replace them with claude-sonnet-4.6 and claude-opus-4-8 respectively, and add a quick sanity test that sends a request exceeding the previous 200 k token limit to verify the new 1 M token context works as expected. Deploy the change to a staging environment now so you have a buffer before the June 15 retirement.