Claude Fable 5.1 (claude-fable-5-1) is a chat model from anthropic with a 1M-token context window; proprietary (API-only); capabilities tools, vision, reasoning; input image, pdf, text; output text.
1MContext
128KMax output
$10$ / 1M in
49.2Intelligence
66.59tok / s
Pricing
Input
$10 / 1M tokens
Output
$50 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-09-26.
Benchmarks
Intelligence index
49.2
Cited from a public third-party leaderboard — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-11-05.
Performance
Throughput
66.59 tokens/s
Latency (TTFT)
270.26 s
Cited speed metrics — a reference, verify at the source. Source: Artificial Analysis. Last verified 2026-11-05.