Anthropic: Claude Sonnet 4.6
Claude Sonnet 4.6 is a reasoning model from Anthropic released on Feb 5, 2026. It reads text, images and files and writes text, with a 1M token context window and up to 128K tokens per reply.
Show moreShow less
It costs $3 per million input tokens and $15 per million output tokens. Cached input bills at $0.30, 90% less than fresh input.
It supports tool calling, structured JSON output and prompt caching.
48 providers serve it, including Azure, Databricks and Vercel AI Gateway. The lowest input price is $0.90 per million tokens at Xpersona.
- Modalities
- In / out price
- $3 / $15 per 1M
- Context
- 1M
- Max output
- 128K
- Released
- Feb 5, 2026
- Knowledge cutoff
- Aug 2025
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Claude Sonnet 4.6 pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $3 / 1M tokens | |
|---|---|---|
| Output | $15 / 1M tokens | |
| Cached input (read) | $0.30 / 1M tokens | 90% off input |
| Cache write | $3.75 / 1M tokens |
Claude Sonnet 4.6 providers
48 providers serve it, including Azure, Databricks and Vercel AI Gateway. The lowest input price is $0.90 per million tokens at Xpersona. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Anthropic First party | $3 | $15 | $0.30 | 1M | 128K |
| Azure | $3 | $15 | $0.30 | 1M | 64K |
| Databricks | $3 | $15 | $0.30 | 1M | 64K |
| Vercel AI Gateway | $3 | $15 | $0.30 | 1M | 128K |
| Vertex | $3 | $15 | $0.30 | 1M | 128K |
| Vertex (Anthropic) | $3 | $15 | $0.30 | 1M | 128K |
| Amazon Bedrock | $3.30 | $16.50 | $0.33 | 1M | 128K |
| Snowflake Cortex | n/a | n/a | – | 1M | 16K |
| Xpersona | $0.90 | $5.55 | $0.09 | 200K | 128K |
| Poe | $2.60 | $13 | $0.26 | 983K | 128K |
| 302.AI | $3 | $15 | – | 1M | 64K |
| Abacus | $3 | $15 | – | 1M | 64K |
Showing 12 of 48 providers: the lab first, then the major clouds, then the cheapest resellers.
What Claude Sonnet 4.6 costs per month
Pick a workload close to yours or type your own volumes.
Independent benchmarks
Measured by third parties, not reported by Anthropic. Each links to its source and shows the date I checked it.
Benchmarks Anthropic reports (3)
- hle-no-tools (Humanity's Last Exam, no tools, updated grader model)34.6%
- hle-with-tools (Humanity's Last Exam, with tools, updated grader model)46.8%
- osworld-verified (OSWorld-Verified, Anthropic's updated evaluation method)78.5%
Labs pick their own settings and harnesses, so compare these only within one lab.
Supported request parameters
What you can set when you call Claude Sonnet 4.6 through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
Alternatives to Claude Sonnet 4.6
Models that take the same inputs and call tools, closest in price, cheaper ones first.
- 200K context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 33 providers.
by anthropicJan 15, 2025$3/M input tokens$15/M output tokens33 providers
- Index 42.1
Reads text, images and files. Tool calling, structured output, reasoning. Served by 38 providers.
by openaiJul 9, 20261.05M context$2/M input tokens$12/M output tokens38 providers
- Index 29.7
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 31 providers.
by googleFeb 18, 20261.05M context$2/M input tokens$12/M output tokens31 providers
- 1M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 2 providers.
by anthropicMay 22, 2025$3/M input tokens$15/M output tokens2 providers
- 983K context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 11 providers.
by anthropicJan 1, 2024$3/M input tokens$15/M output tokens11 providers
- Index 51.8
Reads text, images and files. Tool calling, structured output, reasoning. Served by 27 providers.
by openaiSep 29, 20261.05M context$2/M input tokens$10/M output tokens27 providers
More from Anthropic
- Index 43.4
Reads text, images and files. Tool calling, structured output, reasoning. Served by 26 providers.
by anthropicOct 7, 20261M context$0.10/M input tokens$0.50/M output tokens26 providers
- Index 56
Reads text, images and files. Tool calling, structured output, reasoning. Served by 26 providers.
by anthropicSep 26, 20261M context$2/M input tokens$10/M output tokens26 providers
- Index 57.6
Reads text, images and files. Tool calling, structured output, reasoning. Served by 28 providers.
by anthropicSep 18, 20261M context$4/M input tokens$20/M output tokens28 providers
- Index 53.4
Reads text, images and files. Tool calling, structured output, reasoning. Served by 29 providers.
by anthropicAug 29, 20261M context$10/M input tokens$50/M output tokens29 providers
- 1M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 35 providers.
by anthropicJul 23, 2026$5/M input tokens$25/M output tokens35 providers
- 1M context
Reads text, images and files. Tool calling, structured output, reasoning. Served by 38 providers.
by anthropicJun 29, 2026$2/M input tokens$10/M output tokens38 providers
Claude Sonnet 4.6 questions
How much does the Claude Sonnet 4.6 API cost?
$3 per million input tokens and $15 per million output tokens, with cached input at $0.30. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Claude Sonnet 4.6?
1,000,000 tokens of input, and it can write up to 128,000 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Claude Sonnet 4.6?
48 providers serve it, including Azure, Databricks and Vercel AI Gateway. The lowest input price is $0.90 per million tokens at Xpersona. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Claude Sonnet 4.6 support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Claude Sonnet 4.6 open source?
No. Anthropic serves it through an API only, so you cannot download the weights or host it yourself.
When was Claude Sonnet 4.6 released?
Feb 5, 2026, with training data up to Aug 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. Independent scores from my hand checked rankings, sources linked above. The summary is written from these facts.
Building on Claude Sonnet 4.6?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
Book Meeting