benchrAnthropic
Claude Sonnet 5
Anthropic · frontier. Frontier coding at Sonnet-tier pricing.
The published record
Every number below was read from the provider's own documentation on the date shown. benchr does not restate a figure it has not seen published.
- API identifier
claude-sonnet-5- Context window
- 1MtokensSource
- Maximum output
- 128KtokensSource
- Input
- $2.00per 1M tokensSource
- Output
- $10.00per 1M tokensSource
- Cached input
- $0.2per 1M tokensSource
- Released
- July 1, 2026Source
- License
- Proprietary
Record verified August 31, 2026
What the record says
CORRECTED 2026-07-08: max output is 128,000 tokens, not 200,000 as originally recorded. Re-confirmed against Anthropic's Models Overview. Pricing is $2/$10 per 1M; the increase to $3/$15 announced for September 1, 2026 was cancelled and the launch rate became the standard price. Context is 1,000,000 tokens and max output is 128,000. Safety-classified requests return an explicit refusal; use of another model requires configured application or product logic. Benchmark figures are provider-reported, not benchr measurements.
What benchr has documented it doing
Capabilities in the benchr ledger that name this model. Documented means a provider says it works and benchr recorded where. Verified means benchr ran it.
13 capabilities name this model. All 13 are officially supported by the provider; benchr has run 0 of them itself.
- Stop paying twice for the same file
- Give a model your own tools and data through MCP
- Operate a desktop application
- Drive a real browser, not a scraper
- Hand off a task and walk away from the machine
- Teach the model a procedure once and reuse it
- Read a 600-page PDF including its charts
- Run the whole job overnight at half price
- Let the model write and run real code mid-answer
- Answer from the live web with citations attached
- Work through an entire repository, not a pasted file
- Fit a whole codebase in one prompt, and find its limit
- One screenshot in, a working page out
What has moved
Entries in the change ledger that affect this model, newest first.
Price changed
Anthropic's pricing page now lists $2/$10 per 1M as Claude Sonnet 5's standard price. The increase to $3/$15 scheduled for September 1, 2026 was cancelled; cache-hit input stays $0.20. Verified 2026-08-31.
Price changed
Correction after live re-read of Anthropic's official pricing page: Claude Sonnet 5 launches with introductory API pricing of $2 input / $10 output per 1M tokens through August 31, 2026, then $3/$15 from September 1, 2026. Previous benchr July 1 entry incorrectly recorded $4/$20. Source: platform.claude.com/docs/en/about-claude/pricing
Released
Released July 1, 2026. Anthropic's second Mythos-class-architecture model after Fable 5, priced mid-tier between Sonnet 4.6 and Opus 4.8; 128,000-token max output. Safety-classified requests return an explicit refusal; another-model retry requires configured application logic. Shipped the same day Anthropic restored Claude Fable 5 to all customers. Source: anthropic.com/news/claude-sonnet-5
Which one to use
The rest of the family, with the two numbers that usually decide it. The current model is marked.
| Models | Input | Output | Context window |
|---|---|---|---|
| Claude Haiku 4.5 | $1.00 | $5.00 | 200K |
| Claude Sonnet 5 This page | $2.00 | $10.00 | 1M |
| Claude Sonnet 4.6 | $3.00 | $15.00 | 1M |
| Claude Opus 4.7 | $5.00 | $25.00 | 1M |
| Claude Opus 4.8 | $5.00 | $25.00 | 1M |
| Claude Opus 5 | $5.00 | $25.00 | 1M |
| Claude Fable 5 | $10.00 | $50.00 | 1M |
| Claude Fable 5.1 | $10.00 | $50.00 | 1M |
benchr's read
Worth it for
- Frontier coding at Sonnet-tier pricing
- 128K max output — well above Sonnet 4.6's 64K
- Teams upgrading off Sonnet 4.6 without Opus pricing
- Production agents that need Mythos-class quality
Look elsewhere if
- Offensive-security or bio work — classifiers return an explicit refusal; another-model retry requires configured application logic
- Absolute cheapest volume — Haiku 4.5 remains cheaper
- You need Fable 5's higher ceiling on the hardest tasks
Prices, limits, and identifiers above are provider facts. This section is benchr's judgement about them.
What benchr has written about it
Pieces that name this model, newest first. The ones written about this model come before the ones that mention it in passing.
What is not on this page
Stated rather than filled in.
- No first-token or tokens-per-second figure is recorded. benchr has not measured it and the provider does not publish one.
- benchr has not run any capability on this model itself. Everything in the capability section is documentation, not a test result.