{"version":"2.1.197","anchor":"claude-sonnet-5-is-now-the-default-model","canonical_anchor":"claude-sonnet-5-is-now-the-default-model","heading":"Claude Sonnet 5 Is Now the Default Model","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.197\/e\/claude-sonnet-5-is-now-the-default-model","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.197","markdown":"### Claude Sonnet 5 Is Now the Default Model\n\n**What**\n\nClaude Sonnet 5 (`claude-sonnet-5`) becomes the default Sonnet tier model, replacing Claude Sonnet 4.6. The `sonnet` alias now resolves to `claude-sonnet-5`.\n\n**Details**\n\n- Model ID: `claude-sonnet-5`\n- 1M context window, 64K default output tokens, 128K max output tokens\n- Full adaptive thinking support (`max` effort level enabled)\n- Available on all providers: first-party Anthropic API, Bedrock (`us.anthropic.claude-sonnet-5`), Vertex (`claude-sonnet-5`), Foundry, Gateway, and Mantle (`anthropic.claude-sonnet-5`)\n- Sonnet 4.6 is retained in the model picker as \"Sonnet 4.6 \u00b7 Previous Sonnet version\"\n- Hook examples in settings\/CLAUDE.md now reference `claude-sonnet-5`\n\n**Evidence**\n\n`SONNET_ID` constant updated (search for `\"claude-sonnet-5\"` in model constants; `SONNET_NAME: \"Claude Sonnet 5\"`)"}