Claude Opus 5.5 API Pricing

Token prices, what real workloads cost, and the closest alternatives on price.

Claude Opus 5.5 costs $4.00 per million input tokens and $20.00 per million output tokens on Anthropic, with cached input at $0.20 per million. It ranks #69 cheapest of 76 LLM APIs we track on a blended price of $8.00 per million tokens.
Input
$4.00
per 1M tokens
Output
$20.00
per 1M tokens
Cached input
$0.20
20x cheaper than input
Blended
$8.00
per 1M · 3 input : 1 output

What Claude Opus 5.5 costs for real workloads

WorkloadEstimated cost
Support chatbot: 100K messages$920.00
RAG search: 10K queries with 6K-token context$340.00
Batch summarization: 1,000 long documents$100.00
Coding agent: 100 tasks, 50K context x 20 turns$79.00

Chatbot: 800 input + 300 output tokens per message. RAG: 6,000 + 500 per query. Summarization: 20,000 + 1,000 per document. Coding agent: 20 turns per task over a 50K-token context, with 95% of input served from cache where the model supports it.

Claude Opus 5.5 vs similarly priced models

ModelProviderInput / 1MOutput / 1MCached / 1MBlended
gpt-6.1-sol OpenAI $2.00$10.00 $0.10 $4.00
Claude Sonnet 5.5 Anthropic $2.00$10.00 $0.10 $4.00
Gemini 3.1 Pro Preview Google $2.00$12.00 $0.20 $4.50
gpt-5.3-codex OpenAI $1.75$14.00 $0.17 $4.81
Kimi K3 Together AI $3.00$15.00 $0.30 $6.00
gpt-5.6-sol OpenAI $4.00$20.00 $0.40 $8.00
Claude Opus 5.5 Anthropic $4.00$20.00 $0.20 $8.00
gpt-realtime-2.1 OpenAI $4.00$24.00 $0.40 $9.00
chat-latest OpenAI $5.00$30.00 $0.50 $11.25
Prices last checked November 8, 2026 · re-checked twice a week from official pricing pages and APIs · How we collect prices

Other Anthropic models

Claude Opus 5.5 pricing FAQ

How much does the Claude Opus 5.5 API cost?

Claude Opus 5.5 costs $4.00 per million input tokens and $20.00 per million output tokens on Anthropic, with cached input at $0.20 per million. Prices as of November 8, 2026.

How much does Claude Opus 5.5 cost for 1,000 requests?

At 1,000 input and 500 output tokens per request, 1,000 requests cost about $14.00.

Does Claude Opus 5.5 have a prompt caching discount?

Yes. Cached input is $0.20 per million tokens, 20x cheaper than fresh input. Workloads that resend the same context, like agents and chat with long system prompts, pay mostly the cached rate.

Is Claude Opus 5.5 expensive compared to other LLM APIs?

It ranks #69 cheapest of 76 models we track on a blended price (3 input tokens per output token) of $8.00 per million tokens.

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