Claude Fable 5
Last verified September 7, 2026 · Anthropic pricing ↗$10.00/1M input · $50.00/1M output · 1.0M context · Anthropic
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Alternatives to Claude Fable 5
Pricing Details
AnthropicAnthropic's most capable widely released model (Mythos-class). Exactly 2x Opus 4.8. Cache hit: $1/MTok. Cache write (5min/1hr): $12.50/$20. Batch: $5/$25. Full 1M context at standard pricing, no long-context surcharge. Free on Pro/Max/Team/Enterprise plans June 9-22, then pulled on capacity and redeployed mid-July behind metered usage credits (included up to 50% of weekly limits through early July per Anthropic, then credit/list billing at the $10/$50 rate); Anthropic calls the change temporary. SWE-Bench Pro ~80 (Anthropic-reported), SWE-Bench Verified ~95. Safety fallback to Opus 4.8 in high-risk domains. Requires 30-day data retention (no ZDR). API ID: claude-fable-5.
Input / 1M tokens
$10
Output / 1M tokens
$50
Context Window
1.0M
Max Output
128K
Price History
No price change recorded since 2026-07-24, when this site started tracking this model; it launched on 2026-06-09.
Frequently Asked Questions
Common questions about Claude Fable 5 pricing and usage
Read More About Claude Fable 5
Every model measured across both rewrites of the industry's most-quoted leaderboard lost between 12.3 and 18.1 points in four days, and not one of them changed. The ruler did, twice, and it moved cost per point by 154% for one model and 290% for another.
September 8, 2026 · 13 min read
GPT-6 Astra's rate card is Claude Fable 5's rate card, to the cent, on every line both companies publish. Anthropic moved one of those lines two days before Astra shipped, and it is now the only line where the two flagships disagree.
September 4, 2026 · 13 min read
Claude Fable 5.1 charges what Fable 5 charged on every line of the rate card except one. That one is the cache read, and it is the first time Anthropic has priced a cache hit at anything other than a tenth of input.
September 2, 2026 · 12 min read