Claude platform release notes: June 30, 2026
The removal of manual extended thinking controls in favor of always-on adaptive thinking is the detail that will actually break some existing integrations, so check your API calls before the migration window closes. The 1M context window at this price point puts real pressure on GPT and Gemini pricing for long-context workloads, and the loss of Priority Tier support is a real tradeoff for latency-sensitive production apps.