Claude Opus 5.5 pricing: API and Claude plans
Claude Opus 5.5 costs $4 per million input tokens and $20 per million output, with a 1M context window. Through AIGROW API credit, it costs $1.00 and $5.00.
US dollars per million tokens, standard rate, shortest context band. In Claude, the cheapest plan with it is Pro at $20/mo. Plan prices read 20 October 2026.
- 1,000 support replies
- $20.00
- Cached input
- $0.20
- Context window
- 1,000,000 tokens
- Released
- 22 Sep 2026
- Weights
- Closed weights
From Anthropic’s own pages, 15 October 2026.
Claude Opus 5.5 costs $4 per million input tokens and $20 per million output tokens on Anthropic’s own API, and $0.20 for cached input. At those prices 1,000 support replies cost $20.00, the 7th most expensive of 42 priced models on our list.
In Claude: Claude Opus 5.5 is included in Pro ($20/mo), Max 5x ($100/mo), Max 20x ($200/mo), Team Standard ($25/mo), Team Premium ($125/mo).
claude.com/pricing · Read 20 October 2026. Prices can differ by country and include or exclude tax depending on the country.
AIGROW API credit runs Claude Opus 5.5 at $1.00 / $5.00 per million input / output tokens, up to 75% below list price. See API credit
What a job costs
Three jobs, 1,000 runs of each, at the list price above, and where each puts Claude Opus 5.5 among the 42 models with a list price.
| Job | 1,000 runs | Among 42 |
|---|---|---|
| Support reply3,000 in, 400 out. | $20.00 | 7th most expensive |
| Document summary25,000 in, 1,000 out. | $120 | 7th most expensive |
| Agent task80,000 in (70,000 cached), 3,000 out. | $114 | 8th most expensive |
The token counts are ours, chosen to look like real work; the prices are Anthropic’s. All three jobs stay under 100,000 tokens a request, below every long-context surcharge on the list.
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Cache read is 0.05x input on this model ($0.20). Cache write $5 (5 min) or $8 (1 h). Fast mode $8 / $40. Batch API 50% off. US-only inference bills 1.1x. Full context window billed at standard rates. Max output 128K.
Claude Opus 5.5 against the models it is weighed with
Each comparison puts both list prices side by side and costs the same three jobs on each.
- vs Gemini 4 Argon
- Google's new flagship against Anthropic's, with Argon at half the Opus price until December, when the two match.
- vs Muse Wonder
- Meta's new model for coding and agent work against Anthropic's flagship, at the same $4 / $20.
- vs GPT-6 Astra
- The flagships Anthropic and OpenAI point new work to, with Opus at less than half the Astra price.
- vs Claude Opus 5
- Anthropic's new Opus against the one it replaces, which still costs more per token.
- vs Claude Sonnet 5.5
- Tests whether the new Opus is worth twice the price of the new Sonnet on everyday tasks.
- vs Claude Fable 5.1
- Anthropic's two top models, where Fable costs two and a half times as much as Opus.
- vs Gemini 3.1 Pro (preview)
- Anthropic's default flagship against Google's strongest model, with Gemini cheaper on input and output.
- vs GPT-6.1 Sol
- Two models pitched at complex coding work, with Sol at half the Opus price.
- vs Mistral Large 4
- The European flagship against Anthropic's, for buyers who care where their data is processed.
- vs Grok 4.7
- xAI's flagship against Anthropic's, with Grok far cheaper on output, the main cost driver for long answers.
- vs Kimi K3
- Moonshot's open-weight flagship against Anthropic's, aimed at the same long-horizon coding work for a quarter less.
- vs DeepSeek V4 Pro
- A low-cost open-weight frontier model against Anthropic's flagship, at about a third of the input price.
Other Anthropic models
| Model | Input | Output | Context | 1,000 replies |
|---|---|---|---|---|
| Claude Haiku 5.5Anthropic | $0.10 | $0.50 | 1M | $0.50 |
| Claude Haiku 4.5AnthropicNewer model: Claude Haiku 5.5 | $1.00 | $5.00 | 200K | $5.00 |
| Claude Sonnet 5.5Anthropic | $2.00 | $10.00 | 1M | $10.00 |
| Claude Sonnet 5AnthropicNewer model: Claude Sonnet 5.5 | $2.00 | $10.00 | 1M | $10.00 |
| Claude Sonnet 4.6AnthropicNewer model: Claude Sonnet 5.5 | $3.00 | $15.00 | 1M | $15.00 |
| Claude Opus 5AnthropicNewer model: Claude Opus 5.5 | $5.00 | $25.00 | 1M | $25.00 |
| Claude Fable 5.1Anthropic | $10.00 | $50.00 | 1M | $50.00 |
Where the price comes from
Read on 15 October 2026. Each price is the standard rate for the shortest context band, with no batch or priority discount; long-context surcharges, batch rates and promotions are in each model’s small print. No price was taken from a reseller.
Run Claude Opus 5.5 up to 75% below list price
Through AIGROW API credit, Claude Opus 5.5 costs $1.00 / $5.00 per million input / output tokens against $4.00 / $20.00 at list, and $25 buys $100 of credit. The model id is claude-opus-5.5.
Prices checked 15 October 2026 · See them by release date