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Claude Opus 5.5 vs Claude Sonnet 5.5 pricing

Prices

Claude Opus 5.5 and Claude Sonnet 5.5 prices, USD per 1M tokens
USD per 1M tokensClaude Opus 5.5Claude Sonnet 5.5
Input$4.00$2.00
Output$20.00$10.00
Cache read$0.20$0.10
Cache write$5.00$2.50
Batch input$2.00$1.00
Batch output$10.00$5.00

Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page

Monthly cost by workload

WorkloadClaude Opus 5.5Claude Sonnet 5.5
Chatbot1,000 in / 500 out tokens, 10,000 requests a day$4,200/mo$2,100/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day$6,300/mo$3,150/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input$2,640/mo$1,320/mo

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Context and capabilities

Claude Opus 5.5Claude Sonnet 5.5
Context1,000,000 tokens1,000,000 tokens
Max output128,000 tokens128,000 tokens
Inputtext, image, pdftext, image, pdf
Tool callingYesYes
ReasoningYesYes
Structured outputsYesYes

Questions

What is the price difference between Claude Opus 5.5 and Claude Sonnet 5.5?
Claude Opus 5.5: $4.00 per 1M input tokens and $20.00 per 1M output tokens. Claude Sonnet 5.5: $2.00 per 1M input tokens and $10.00 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $4,200 per month for Claude Opus 5.5 and $2,100 for Claude Sonnet 5.5.
Which has the longer context window, Claude Opus 5.5 or Claude Sonnet 5.5?
Both accept up to 1,000,000 tokens of context.
Do Claude Opus 5.5 and Claude Sonnet 5.5 have prompt caching and batch prices?
Claude Opus 5.5: cached input $0.20 per 1M tokens; batch $2.00 per 1M input tokens and $10.00 per 1M output tokens. Claude Sonnet 5.5: cached input $0.10 per 1M tokens; batch $1.00 per 1M input tokens and $5.00 per 1M output tokens.

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