How much does Claude Opus 5.5 cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Claude Opus 5.5 costs about $4,200 per month at the provider's official prices (verified) ($4.00 per 1M input tokens, $20.00 per 1M output tokens).

Does Claude Opus 5.5 support prompt caching?

Yes. Cached input costs $0.20 per 1M tokens, compared with $4.00 for regular input. Writing to the cache costs $5.00 per 1M tokens.

How long is Claude Opus 5.5's context window?

Claude Opus 5.5 accepts up to 1,000,000 tokens (1M) of context and returns up to 128,000 tokens per response.

Does Claude Opus 5.5 have a batch price?

Yes. Asynchronous batch requests cost $2.00 per 1M input tokens and $10.00 per 1M output tokens.

Claude Opus 5.5 API Pricing

Anthropic · released Sep 22, 2026 · 1M context · API model ID claude-opus-5-5

Claude Opus 5.5 by Anthropic API pricing: $4.00 per 1M input tokens and $20.00 per 1M output tokens (verified against the official pricing page, Oct 9, 2026).

Prices

Claude Opus 5.5 prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$4.00
Output	$20.00
Cache read	$0.20
Cache write	$5.00
Batch input	$2.00
Batch output	$10.00

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

Estimated monthly cost

$4,200

per month

per day: $140.00
per request: $0.014

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.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$4,200/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$6,300/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$2,640/mo

Context and capabilities

Context: 1,000,000 tokens
Max output: 128,000 tokens
Input: text, image, pdf
Output: text
Knowledge cutoff: June 2026
Open weights: No
Tool calling: Yes
Reasoning: Yes
Structured outputs: Yes

Capabilities and limits as listed by models.dev.

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Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does Claude Opus 5.5 cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Claude Opus 5.5 costs about $4,200 per month at the provider's official prices (verified) ($4.00 per 1M input tokens, $20.00 per 1M output tokens).
Does Claude Opus 5.5 support prompt caching?: Yes. Cached input costs $0.20 per 1M tokens, compared with $4.00 for regular input. Writing to the cache costs $5.00 per 1M tokens.
How long is Claude Opus 5.5's context window?: Claude Opus 5.5 accepts up to 1,000,000 tokens (1M) of context and returns up to 128,000 tokens per response.
Does Claude Opus 5.5 have a batch price?: Yes. Asynchronous batch requests cost $2.00 per 1M input tokens and $10.00 per 1M output tokens.