Claude/Flagship

Claude Opus 5.5

Claude Opus 5.5 is Claude's most capable model, priced at $4.00/MTok input and $20.00/MTok output with a 1,000K context window. Added by the model-onboarding job on 2026-09-24. Prices confirmed by the provider pricing page and the LiteLLM cross-check. Release date from the provider model list. Not yet benchmarked, so never recommended.

Input $/MTok

$4.00

Output $/MTok

$20.00

Context window

1,000K

Cache read discount

95% off

Claude Opus 5.5 pricing breakdown

RateInput $/MTokOutput $/MTok
Standard$4.00$20.00
Cached read (95% off input)$0.20-
Cached write (25% surcharge)$5.00-
Batch (50% off)$2.00$10.00

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

Claude Opus 5.5 task benchmarks

Confidence scores (0-100) and cross-provider rank for each task type. Rank 1 is best across all 72 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 Opus 5.5 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$0.0880
Unit Test Generation3,0005,000$0.1120
SQL Generation1,5001,000$0.0260
API Generation3,0006,000$0.1320
Code Refactoring4,0004,000$0.0960
Code Review5,0002,000$0.0600
PR Review8,0003,000$0.0920
Security Review6,0002,500$0.0740
Bug Detection5,0002,000$0.0600
Document Summarization10,0001,000$0.0600
PDF Summarization15,0001,500$0.0900
Meeting Notes8,0002,000$0.0720

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 (95% read discount)
1K$88$82.68
10K$880$826.8
100K$8,800$8,268
500K$44,000$41,340
1M$88,000$82,680

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 Opus 5.5

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

ModelProviderInput $/MTokOutput $/MTokInput savings
GPT 6 SolGPT$2.00$10.0050% cheaper
Grok 4.6Grok$2.00$6.0050% cheaper
Grok 4.5Grok$2.00$6.0050% cheaper
Grok 4.7Grok$2.00$6.0050% cheaper
GPT 5.6 SolGPT$4.00$20.00Same price
GPT 5.5GPT$5.00$30.0025% more
GPT 4o (2024-05-13)GPT$5.00$15.0025% more
GPT 4 Turbo (2024-04-09)GPT$10.00$30.00150% more
GPT 6 AstraGPT$10.00$50.00150% more
GPT 5 ProGPT$15.00$120.00275% more
o1GPT$15.00$60.00275% more
o3 ProGPT$20.00$80.00400% more
GPT 5.2 ProGPT$21.00$168.00425% more
GPT 4 (0613)GPT$30.00$60.00650% more
GPT 5.4 ProGPT$30.00$180.00650% more
GPT 5.5 ProGPT$30.00$180.00650% more
o1 ProGPT$150.00$600.003650% more

Claude Opus 5.5 pricing history

Input launched

$4.00/MTok at launch

Sep 21, 2026

View full Claude Opus 5.5 pricing history

Track your Claude Opus 5.5 spend

See exactly how much you spend on Claude Opus 5.5 and where you can save. Two-line wrapper install, no API keys shared.