Claude/Flagship

Claude Fable 5.1

Claude Fable 5.1 is Claude's most capable model, priced at $10.00/MTok input and $50.00/MTok output with a 1,000K context window.

Input $/MTok

$10.00

Output $/MTok

$50.00

Context window

1,000K

Cache read discount

98% off

Claude Fable 5.1 pricing breakdown

RateInput $/MTokOutput $/MTok
Standard$10.00$50.00
Cached read (98% off input)$0.25-
Cached write (25% surcharge)$12.50-
Batch (50% off)$5.00$25.00

All rates in USD per million tokens. Prices verified against provider documentation.

Claude Fable 5.1 task benchmarks

Confidence scores (0-100) and cross-provider rank for each task type. Rank 1 is best across all 20 models.

Not benchmarked. The third-party benchmark source used for confidence scores does not cover Claude models yet. Scores will appear here once independent benchmarks are published.

Claude Fable 5.1 cost by use case

Estimated cost per API call using default token counts for each workload.

Use caseInput tokensOutput tokensCost / call
Code Generation2,0004,000$0.2200
Unit Test Generation3,0005,000$0.2800
SQL Generation1,5001,000$0.0650
API Generation3,0006,000$0.3300
Code Refactoring4,0004,000$0.2400
Code Review5,0002,000$0.1500
PR Review8,0003,000$0.2300
Security Review6,0002,500$0.1850
Bug Detection5,0002,000$0.1500
Document Summarization10,0001,000$0.1500
PDF Summarization15,0001,500$0.2250
Meeting Notes8,0002,000$0.1800

Monthly cost projections

Projected monthly spend at different call volumes, using code generation as a representative workload (2,000 input / 4,000 output tokens per call).

Calls / monthWithout cachingWith caching (98% read discount)
1K$220$206.35
10K$2,200$2,063.5
100K$22,000$20,635
500K$110,000$103,175
1M$220,000$206,350

Caching estimate assumes 70% of input tokens are cache reads. Your actual cache hit rate will depend on prompt structure and reuse.

Flagship alternatives to Claude Fable 5.1

Same-tier models from other providers, sorted by input price.

ModelProviderInput $/MTokOutput $/MTokInput savings
Grok 4.6Grok$2.00$6.0080% cheaper
Grok 4.5Grok$2.00$6.0080% cheaper
GPT 5.6 SolGPT$4.00$20.0060% cheaper
GPT 5.5GPT$5.00$30.0050% cheaper

Track your Claude Fable 5.1 spend

See exactly how much you spend on Claude Fable 5.1 and where you can save. Two-line wrapper install, no API keys shared.