Anthropic
Claude Fable 5.2
Launched 2026-11-09 · Knowledge up to 2026-06 · Listed on OpenRouter 2026-11-09
Prices updated . Benchmarks updated .
Claude Fable 5.2 is Anthropic's most capable model for the most demanding technical work, with gains over Fable 5.1 in coding, reasoning, and vision. In prerelease testing it completed otherwise-infeasible...
You send / 1M
$8.00
tokens in
It replies / 1M
$40.00
tokens out
Context
1M
tokens it can read at once
Typical request
$0.030
1,000 words in, 400 out
Benchmarks
No independent score in the current Epoch or LMArena files, and no lab-reported score on file.
Data privacy
No training or retention: Providers do not train on your prompts, but they may keep them for a time.
Based on OpenRouter and Vercel AI Gateway data. Confirm terms with the provider before sending sensitive data.
What it can do
- Reads: text, image, file, pdf
- Writes: text
- Weights: Closed
- Reasoning: Yes
- Tool calling: Yes
- Longest reply: 128K tokens
- Repeated text is billed at $0.200 per 1M (prompt caching)
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Appears in
Estimate your monthly cost with Claude Fable 5.2
Sources and licenses
- OpenRouter: Prices, context windows, modalities and the model list come from the OpenRouter public API. Data: OpenRouter.
- Vercel AI Gateway: The no-training flag comes from the Vercel AI Gateway model list.
- models.dev: Lab launch dates, open-weights flags and knowledge cutoffs come from models.dev. Copyright (c) 2025 models.dev, MIT License.
- Epoch AI: Independent benchmark scores and the Epoch Capabilities Index (ECI) come from Epoch AI's Benchmarking Hub, used under CC BY 4.0. Epoch AI, Capabilities & benchmarking, epoch.ai/benchmarks. Scores Epoch marks as external keep their original license, and the source is named on each score.
- LMArena: Arena Elo (text, webdev and vision) comes from the LMArena leaderboard dataset (lmarena-ai/leaderboard-dataset), CC BY 4.0, leaderboard date 2026-10-28.
- Lab-reported scores, when an editor has added them, are the lab's own numbers. Each one links to the source and is labeled lab-reported. They are not used to rank the lists.
- What a score measures: the benchmark guide.