Anthropic retires two flagship models - immediate migration required

🚨 Breaking

• Anthropic retired claude-sonnet-4-20250514 and claude-opus-4-20250514 on June 15, 2026. All API requests to these models now return an error. Replace with claude-sonnet-4-6 and claude-opus-4-8 respectively. Researchers can apply for ongoing access via the External Researcher Access Program.
• Model deprecations page | Release notes

🗑️ Dépréciations

Aucun changement (covered under breaking).

💰 Pricing

Aucun changement.

🆕 Nouveautés

• llama.cpp multiple builds (b9660, b9659, b9642, b9637, b9632) with tool-call parsing fixes, Cohere2MoE parser, and other improvements. See releases.
• Microsoft released FastContext-1.0-4B-RL on Hugging Face, a 4B parameter RL-tuned model based on Qwen3-4B-Instruct. Model card.
• Google DeepMind announced $1.5B investment for 2026–2027 to expand Alabama data center campus. Blog post.

🌐 Actualité IA

Aucun signal.

💡 Conseil du jour

If your production code references claude-sonnet-4-20250514 or claude-opus-4-20250514, swap to the suggested replacements immediately. Update your model mapping in config or environment variables and test with a few requests to ensure no regression.