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Toolsummary LLM price ledger

Us Gov Anthropic Claude Opus 5.5 pricing

Source: litellm · updated 2026-10-28

Short answer: Us Gov Anthropic Claude Opus 5.5 costs $4.80 per million input tokens and $24.00 per million output tokens. That is a 3:1 blended rate of $9.60 per million tokens, ranking it #669 of 713 tracked models by input price.
Input / 1M
$4.80
Output / 1M
$24.00
Output ÷ input
5.00×
Context window
1,000,000

Price breakdown

MetricUSD
Input, per 1M tokens$4.80
Output, per 1M tokens$24.00
Output ÷ input multiple5.00×
3:1 blended, per 1M tokens$9.60
Context window1,000,000 tokens
Vendorus

What a typical workload costs

Monthly volumeInput costOutput costTotal
1M in / 250K out$4.80$6.00$10.80
10M in / 2.5M out$48.00$60.00$108
100M in / 25M out$480$600$1,080

Other us models

Cheaper alternatives

Next cheaper option: GPT Realtime 2 at $4.00 per 1M input tokens. Next step up: Claude Fable 5.1 at $5.00 per 1M input tokens.


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