Flagship — best answers, highest costCommercial API

Claude Fable 5.1 Pricing

Anthropic · anthropic-claude-fable-5-1

ShareX Facebook LinkedIn

Input / 1M tokens

$10.00

Output / 1M tokens

$50.00

Context window

1M tokens

≈ 1,333 pages of text

Max output

128k tokens

What it costs in practice

Typical request (1,200 in + 400 out tokens)$0.032

1,000 requests / month$32.00/mo 10,000 requests / month$320.00/mo 100,000 requests / month$3,200.00/mo

Estimate your own workloadOpens the calculator with Claude Fable 5.1 preloaded — adjust volume and token counts there.

Price history

Only one price point recorded so far.

The staircase chart appears once a price change is detected.

What it excels at

Handles 1M-token contexts with strong multimodal reasoning over long documents and images. Suitable for complex analysis and synthesis tasks requiring extended output.

The business tradeoff

Output pricing at $50 per million tokens is high relative to peers. Limited public benchmark data on the Fable variant reduces predictability for production workloads.

Cheaper from Anthropic

Claude Fable 5.1 (batch)Anthropic$0.016/ typical request Claude Sonnet 5Anthropic$0.0064/ typical request Claude Haiku 4.5Anthropic$0.0032/ typical request

Same tier from other providers

Qwen3.7 PlusQwen$0.0009/ typical request Grok 4.3xAI$0.0025/ typical request DeepSeek R1DeepSeek$0.0015/ typical request

Head-to-head

Claude Fable 5.1 vs Qwen3.7 Plus →Claude Fable 5.1 vs Grok 4.3 →Claude Fable 5.1 vs DeepSeek R1 →

Vendor list rates, as of Sep 1, 2026 · source: openrouter · per-request examples assume 1,200 input + 400 output tokens.