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DX-3275: add Claude Fable 5.2 model constants - #275
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Claude API and OpenCode Zen use claude-fable-5-2; OpenRouter and Vercel AI Gateway list anthropic/claude-fable-5.2. Neon and Cursor do not serve it yet.
CahidArda
approved these changes
Nov 12, 2026
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Adds Claude Fable 5.2 ($8 / $40 per MTok) next to Fable 5.1 in the TypeScript SDK, the Python SDK and the CLI model picker.
ClaudeCode.Fable_5_2/FABLE_5_2anthropic/claude-fable-5-2OpenRouterModel.Claude_Fable_5_2openrouter/anthropic/claude-fable-5.2VercelModel.Claude_Fable_5_2vercel/anthropic/claude-fable-5.2OpenCodeModel.Claude_Fable_5_2opencode/claude-fable-5-2OpenCodeModel.Zen_Claude_Fable_5_2opencode/claude-fable-5-2I checked each ID against the provider's live model list on 2026-11-09. Neon and Cursor don't offer Fable 5.2 yet, so they have no constant.
Also updated: the SDK README model tables, a changeset (patch for
@upstash/boxand@upstash/box-cli) and the Python changelog.Backend: upstash/box-backend#321 (Claude Agent SDK bump). Console list prices: separate upstash-console-v2 PR.
Testing
types.test.ts, CLImodels.test.ts, Pythontest_models.py: passpnpm ci:lint: pass