Pricing · Anthropic

Claude Opus 5.5

Anthropic's claude-opus-5-5, 1M tokens of context. Every number on this page was read off Anthropic's own pricing page — never estimated, never recalled from memory.

How Anthropic describes it

“For long-running agentic coding and knowledge work”

Pricing

At the calculator's starting volume, 1M input tokens and 200K output tokens with no cache hits, Claude Opus 5.5 costs $8.00: $4.00 for input and $4.00 for output, at the prices above. Same formula as the calculator; change the volume there.

Where this price sits

$4.00 per 1M input tokens is the 53rd cheapest input price of the 67 current models with a verified price on this site, and the 5th of Anthropic's 14. Output costs 5.0× the input price.

Other current models in the Opus family:

• Claude Opus 5 1M tokens $5.00 in · $25.00 out
• Claude Opus 4.8 1M tokens $5.00 in · $25.00 out
• Claude Opus 4.7 1M tokens $5.00 in · $25.00 out
• Claude Opus 4.6 1M tokens $5.00 in · $25.00 out
• Claude Opus 4.5 200K tokens $5.00 in · $25.00 out

Other price lists Anthropic publishes for Claude Opus 5.5

The prices above are Anthropic's Standard list, the one the table and the calculator use. Anthropic also sells Claude Opus 5.5 on 2 other lists, each with a condition. Figures and wording are quoted from Anthropic's own pages as read on the date shown; this site computes none of them.

• Batch · 50% discount on both input and output tokens · wait: results when the batch completes or after 24 hours

  Printed for Claude Opus 5.5: $2.00 input, $10.00 output, per 1M tokens.

  The Batch API allows asynchronous processing of large volumes of requests with a 50% discount on both input and output tokens. You can access batch results when all messages have completed or after 24 hours, whichever comes first.

  Source, read September 24, 2026

• Fast mode · double Standard · pay more for faster output, research preview, first-party API only

  Printed for Claude Opus 5.5: $8.00 input, $40.00 output, per 1M tokens.

  Fast mode, in research preview, provides significantly faster output for Claude Opus 5.5, Claude Opus 5, and Claude Opus 4.8 at premium pricing. Fast mode is not available with the Batch API.

  Source, read September 24, 2026

Against Claude Opus 5

Claude Opus 5 is the earlier version of the same name in this dataset (still current). Against Claude Opus 5, Claude Opus 5.5 has input at $4.00 against $5.00, 1.3× less; output at $20.00 against $25.00, 1.3× less; cached input at $0.20 against $0.50, 2.5× less (per 1M tokens). Its prices were verified September 28, 2026: Claude Opus 5 pricing →

Specifications

Claude Opus 5.5 was released on September 22, 2026. It returns up to 128K tokens per response, against a context window of 1M tokens. Anthropic has committed not to retire it before September 22, 2027; no firm date is announced.

Questions about Claude Opus 5.5 pricing

How much does Claude Opus 5.5 cost per million tokens?

$4.00 per 1M input tokens and $20.00 per 1M output tokens, read on Anthropic's official pricing page on September 28, 2026.

What does a cached input token cost on Claude Opus 5.5?

$0.20 per 1M cached input tokens, 5% of the $4.00 input price; a 5-minute cache write costs $5.00, a 1-hour cache write costs $8.00 per 1M tokens.

Released September 22, 2026 (model page: 'Released September 22, 2026'; platform release notes, September 22, 2026: 'We've launched Claude Opus 5.5 (claude-opus-5-5) … at $4 / $20 USD per MTok (Claude Opus 5 is $5 / $25)'). Read by hand on 2026-09-24 from Anthropic's general pricing page, 'Model pricing' table: 'Claude Opus 5.5 … $4 / MTok $20 / MTok $5 / MTok $8 / MTok $0.20 / MTok' (input, output, 5-minute cache write, 1-hour cache write, cache read). Cache reads cost 0.05x the base input price ($0.20 against $4), a rate the page states only for this model: 'Cache read (hit) | 0.1x base input price (0.025x on Claude Fable 5.1 and Claude Mythos 5.1; 0.05x on Claude Opus 5.5)'. Model page, read the same day: 'Context window 1M tokens', 'Max output 128K tokens', 'Max output (Batch API, beta) 300K tokens', 'Reliable knowledge cutoff Jun 2026', 'Retirement Not sooner than September 22, 2027'; the deprecations page lists it 'Active'. Batch API discount (batchDiscount 0.5) verified by hand on 2026-09-24 against the same pricing page, 'Batch processing' section: 'The Batch API allows asynchronous processing of large volumes of requests with a 50% discount on both input and output tokens', table row 'Claude Opus 5.5 $2 / MTok $10 / MTok'. Fast mode (research preview) is priced at $8 / $40, not shown here.

Verified September 28, 2026 against Anthropic's official pricing page. Confidence: confirmed. No price change recorded for this model. How the data is checked.

Other Anthropic models with a verified price

• Claude Haiku 4.5 Haiku $1.00 in · $5.00 out
• Claude Sonnet 5.5 Sonnet $2.00 in · $10.00 out
• Claude Sonnet 5 Sonnet $2.00 in · $10.00 out
• Claude Sonnet 4.6 Sonnet $3.00 in · $15.00 out
• Claude Opus 5 Opus $5.00 in · $25.00 out
• Claude Opus 4.8 Opus $5.00 in · $25.00 out
• Claude Opus 4.7 Opus $5.00 in · $25.00 out
• Claude Opus 4.6 Opus $5.00 in · $25.00 out
• Claude Opus 4.5 Opus $5.00 in · $25.00 out
• Claude Fable 5.1 Fable $10.00 in · $50.00 out
• Claude Mythos 5.1 Mythos $10.00 in · $50.00 out
• Claude Fable 5 Fable $10.00 in · $50.00 out
• Claude Mythos 5 Mythos $10.00 in · $50.00 out

Cheaper or equally priced alternatives

Current models with an input price at or below $4.00 per 1M tokens. The cheapest of these, Command R+ (08-2024), is 1.6× cheaper on input.

• GPT-5.6 Sol OpenAI $4.00 in · $20.00 out · promo
• Claude Sonnet 4.6 Anthropic $3.00 in · $15.00 out
• Command A Cohere $2.50 in · $10.00 out
• Command R+ (08-2024) Cohere $2.50 in · $10.00 out

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