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Pricing · Claude

Claude Opus 5.5 pricing: API price, cost per message and plans

What Claude Opus 5.5 costs, three ways: Anthropic's API price per token, what Claude Opus 5.5's replies actually cost in our test runs, and how many Claude Opus 5.5 messages each llmwise plan includes. Every limit on Claude Opus 5.5 is on its model page.

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API prices checked against OpenRouter's Claude Opus 5.5 page. Updated .

Short answer

Claude Opus 5.5's API price is $4.00 per million input tokens and $20.00 per million output tokens (Anthropic's list price, September 2026). In our 50 test runs a Claude Opus 5.5 reply cost $0.0107 on average (median $0.0079), from $0.0050 a reply on agents and tool use to $0.0185 on writing. In llmwise you pay per message instead: up to 62 Claude Opus 5.5 messages a month on Pro ($20), 200 on Max ($50), 450 on Ultra ($100) and 1,000 on Studio ($200).

Claude Opus 5.5 API pricing

Claude Opus 5.5 through its API is billed per token: $4.00 in, $20.00 out per million tokens, as of September 2026.

Claude Opus 5.5 API price
Input tokens$4.00 per million
Output tokens$20.00 per million
A typical Claude Opus 5.5 message (4,000 in, 700 out)$0.0300
1,000 typical Claude Opus 5.5 messages$30.00
Typical Claude Opus 5.5 messages for $133
Whose priceAnthropic's list price

What a Claude Opus 5.5 reply cost in our test runs

We sent the same 50 test prompts to every model in llmwise on September 27, 2026, through OpenRouter with llmwise's own prompt and settings. Here's what each Claude Opus 5.5 reply cost, job by job.

What a Claude Opus 5.5 reply cost in our test runs, job by job
JobClaude Opus 5.5, per replyPer 1,000 repliesTokens in / outPassed
Coding$0.0171$17.07670 / 6895 of 5
Writing$0.0185$18.46552 / 8074 of 5
Math$0.0060$5.96536 / 1915 of 5
Summarization$0.0095$9.49690 / 3055 of 5
Data analysis$0.0131$13.07753 / 4685 of 5
Customer support$0.0108$10.80722 / 3625 of 5
Translation$0.0108$10.79603 / 3925 of 5
SQL$0.0092$9.19830 / 2555 of 5
RAG and answering from documents$0.0073$7.33902 / 1445 of 5
Agents and tool use$0.0050$5.04660 / 905 of 5
Each Claude Opus 5.5 cost is the average of what OpenRouter charged us for its replies to one job's prompts; tokens out include any reasoning. Passed: how many of those Claude Opus 5.5 replies passed their check. In llmwise a Claude Opus 5.5 message isn't billed by the token.

Across all 50 Claude Opus 5.5 replies: $0.0107 on average, $0.0079 at the median, $0.0037 for the cheapest and $0.0443 for the dearest. The Claude Opus 5.5 replies averaged 692 tokens in and 370 out, against the typical message's 4,000 in and 700 out: each test prompt starts a new chat, while a reply deep in a long chat rereads all of it.

Every prompt, and how each reply is scored.

Claude Opus 5.5 on each llmwise plan

In llmwise a Claude Opus 5.5 message is one of a published count, however long the reply runs, and you see what's left before you send.

  • Free: Claude Opus 5.5 isn't in the one-time trial of 5 messages; it takes a paid plan.

  • Pro, $20 a month: up to 62 Claude Opus 5.5 messages a month, which is $0.32 a Claude Opus 5.5 message if every message goes to Claude Opus 5.5.

  • Max, $50 a month: up to 200 Claude Opus 5.5 messages a month, which is $0.25 a Claude Opus 5.5 message if every message goes to Claude Opus 5.5.

  • Ultra, $100 a month: up to 450 Claude Opus 5.5 messages a month, which is $0.22 a Claude Opus 5.5 message if every message goes to Claude Opus 5.5.

  • Studio, $200 a month: up to 1,000 Claude Opus 5.5 messages a month, which is $0.20 a Claude Opus 5.5 message if every message goes to Claude Opus 5.5.

  • A $10 top-up adds up to 50 Claude Opus 5.5 messages, valid 12 months.

Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.

Claude Opus 5.5 against the other Claude models

Every Claude model in llmwise beside Claude Opus 5.5, dearest first.

Claude Opus 5.5 beside its family
ModelAPI, per 1M in / outInput price against Claude Opus 5.5Average reply in our runsOn Pro
Claude Fable 5.1Anthropic$10.00 / $50.002.5 times Claude Opus 5.5's$0.0200Up to 31 a month
Claude Opus 5.5AnthropicThis page$4.00 / $20.00–$0.0107Up to 62 a month
Claude Sonnet 5Anthropic$2.00 / $10.0050% of Claude Opus 5.5's$0.0041Up to 125 a month
Claude Haiku 4.5Anthropic$1.00 / $5.0025% of Claude Opus 5.5's$0.0015Up to 250 a month
API prices as of September 2026, from our model catalog. The average reply is what OpenRouter charged for each model's replies to the same test prompts as Claude Opus 5.5's. On Pro: the most messages a month if all of Pro's allowance goes to that model, or an everyday model's daily count.

Claude Opus 5.5 in Anthropic's own plans

What Anthropic's own subscriptions say about Claude Opus 5.5, in their words, set beside llmwise's count. Each was checked on the day shown; we drop a plan from this page when its facts are more than 45 days old.

Claude Opus 5.5's own page: Claude Opus 5.5: price, limits and messages on every plan. Claude Opus 5.5 passed 49 of the 50 test prompts these costs come from.

Questions

How much does a Claude Opus 5.5 message cost?

In our test runs, $0.0107 a reply on average through OpenRouter (median $0.0079), across 50 Claude Opus 5.5 replies to our test prompts. At the API price a typical Claude Opus 5.5 message of 4,000 tokens in and 700 out costs $0.0300; a long chat costs more, because every reply rereads it.

What is Claude Opus 5.5's API price?

$4.00 per million input tokens and $20.00 per million output tokens, as of September 2026 (Anthropic's list price).

How many Claude Opus 5.5 messages does llmwise Pro include?

Up to 62 Claude Opus 5.5 messages a month on Pro ($20 a month), if the whole allowance goes to Claude Opus 5.5; the count on each plan is above.

Can I use Claude Opus 5.5 for free?

Not in llmwise's free trial, which covers the smaller models; Claude Opus 5.5 takes a paid plan.

Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.

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