Claude Sonnet 5 API pricing per million tokens
Claude Sonnet 5 costs $2 per million input tokens and $10 per million output, with a 1M context window.
AIGROW credit covers Claude Opus 5.5, Claude Fable 5.2, Claude Fable 5.1, GPT-6 Astra, Claude Sonnet 5.5, GPT-6.1 Sol, GPT-6.1 Terra, Grok 4.7 and Gemini 4 Argon. Claude Sonnet 5.5 below list price
$25 a month brings $110 of API credit and cancels any time; $25 once buys $100. US dollars per million tokens, standard rate, shortest context band. Number 33 of 256 on the Epoch Capabilities Index by Epoch AI, data of 12 November 2026. CC BY 4.0 Newer model: Claude Sonnet 5.5
- 1,000 support replies
- $10.00
- Cached input
- $0.20
- Context window
- 1,000,000 tokens
- Released
- 30 Jun 2026
- Weights
- Closed weights
From Anthropic’s own pages, 12 November 2026.
Claude Sonnet 5 costs $2 per million input tokens and $10 per million output tokens on Anthropic’s own API, and $0.20 for cached input. At those prices 1,000 support replies cost $10.00, the 19th most expensive of 49 priced models on our list.
AIGROW API credit per million input / output tokens: Claude Opus 5.5 $1.60 / $8.00, Claude Fable 5.2 $3.20 / $16.00, Claude Fable 5.1 $4.00 / $20.00, GPT-6 Astra $2.50 / $12.50, Claude Sonnet 5.5 $0.80 / $4.00, GPT-6.1 Sol $0.50 / $2.50, GPT-6.1 Terra $0.25 / $1.25, Grok 4.7 $0.50 / $1.50 and Gemini 4 Argon $1.00 / $5.00. That is 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 Sonnet 5 among the 49 models with a list price.
| Job | 1,000 runs | Among 49 |
|---|---|---|
| Support reply3,000 in, 400 out. | $10.00 | 19th most expensive |
| Document summary25,000 in, 1,000 out. | $60.00 | 19th most expensive |
| Agent task80,000 in (70,000 cached), 3,000 out. | $64.00 | 17th 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.
Claude Sonnet 5 on real small-business tasks
What the AIGROW benchmark measured when Claude Sonnet 5 was given 20 office tasks, each marked pass or fail by fixed checks.
- Success rate
- 85% of 20 runs passed (95% interval 64 to 95%), 10th of 36 models.
- Cost per 1,000 passes
- $6.70, failed runs included, worked from list price.
- Answer time
- 25 s median, 51 s at the 90th percentile.
- Strongest and weakest
- Appointment scheduling (100% passed) and review replies (0%).
The small print
What the base rate above leaves out, copied from the maker’s pages: surcharges, discounts, promotions and cache pricing.
Legacy model, still available; the current Sonnet is Claude Sonnet 5.5. The introductory $2 / $10 price became the standard price; the planned rise to $3 / $15 was cancelled. Cache write $2.50 (5 min) or $4 (1 h). Batch API 50% off. US-only inference bills 1.1x. Full context window billed at standard rates.
Claude Sonnet 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 Claude Sonnet 5.5
- Anthropic's new Sonnet against the one it replaces, at the same list price with a cheaper cache.
- vs Mistral Medium 3.5
- The European option against Anthropic's previous workhorse, for buyers who care where their data is processed.
- vs GPT-5.6 Terra
- Anthropic's and OpenAI's previous mid-tier models at nearly the same list price; both makers have since released a newer one.
- vs Gemini 3.8 Flash
- Anthropic's previous workhorse against Google's, where Flash stays cheaper even after its 2027 price rise.
- vs Claude Sonnet 4.6
- An upgrade decision where the newer model is also the cheaper one.
- vs Claude Opus 5
- Tests whether Opus is worth 2.5 times the price of Sonnet on everyday tasks.
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 4.6AnthropicNewer model: Claude Sonnet 5.5 | $3.00 | $15.00 | 1M | $15.00 |
| Claude Opus 5.5Anthropic | $4.00 | $20.00 | 1M | $20.00 |
| Claude Opus 5AnthropicNewer model: Claude Opus 5.5 | $5.00 | $25.00 | 1M | $25.00 |
| Claude Fable 5.2Anthropic | $8.00 | $40.00 | 1M | $40.00 |
| Claude Fable 5.1AnthropicNewer model: Claude Fable 5.2 | $10.00 | $50.00 | 1M | $50.00 |
Where the price comes from
Read on 12 November 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.
Compare Claude Sonnet 5 with 53 other models
The price list sets every model’s input and output price side by side, with what a support reply, a document summary and an agent task cost on each.
Prices checked 12 November 2026 · See them by release date