One agent session
1M input tokens and 100K output tokens, no caching.
- Input1M x $2 = $2.00
- Output0.1M x $10 = $1.00
$3.00per session
Anthropic - Closed weights
Claude Sonnet 5 pricing and specs
Claude Sonnet 5 is a closed-weights model from Anthropic that costs $2 per 1M input tokens and $10 per 1M output tokens on the first-party API, with a 1M-token context window.
Last verified from platform.claude.com. All sources
- Input / 1M
- $2
- Output / 1M
- $10
- Context
- 1M tokens
- Weights
- Closed
Pricing per 1M tokens
| Item | Price / 1M tokens |
|---|---|
| Input | $2 |
| Output | $10 |
| Cache read | $0.20 |
| Cache write (5 minutes) | $2.50 |
| Cache write (1 hour) | $4 |
| Batch inputBatch requests | $1 |
| Batch outputBatch requests | $5 |
Note: Legacy model, still sold. The $2/$10 launch price was introductory through 2026-08-31 and was made the standard price on 2026-08-10; the scheduled rise to $3/$15 will not occur (pricing page footnote and release notes).
Specs
- Context window
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Release date
- Provider
- Anthropic
- API model id
claude-sonnet-5- Vercel AI Gateway id
anthropic/claude-sonnet-5- Weights
- Closed weights
What Claude Sonnet 5 costs in practice
Worked from the standard list rates above, with the math shown so you can swap in your own token counts.
A chat app
10,000 requests a day at 2K input and 500 output tokens each.
- Input20M x $2 = $40.00
- Output5M x $10 = $50.00
$90.00per day
$2,700.00 per 30-day month
The same session at a 90% cache hit
90% of the input is read from the prompt cache. The one-time cache write premium is not included.
- Cached input0.9M x $0.20 = $0.18
- Uncached input0.1M x $2 = $0.20
- Output0.1M x $10 = $1.00
$1.38per session
Compare with
| Model | Input / 1M | Output / 1M |
|---|---|---|
| Claude Sonnet 5 (this page) | $2 | $10 |
| Claude Sonnet 5.5Anthropic | $2 | $10 |
| Command ACohere | $2.50 | $10 |
| Command R+ 08-2024Cohere | $2.50 | $10 |
| Gemini 2.5 ProGoogle | $1.25 | $10 |
| Claude Haiku 4.5Anthropic | $1 | $5 |
| Claude Sonnet 4.5Anthropic | $3 | $15 |
| Claude Sonnet 4.6Anthropic | $3 | $15 |
| Claude Haiku 5.5Anthropic | $0.10 | $0.50 |
| Claude Opus 5.5Anthropic | $4 | $20 |
Compare
Side-by-side pages with both models' prices, specs, cost examples and like-for-like benchmark rows.
Related reading
- Opus 5.5 vs Sonnet 5.5 vs Haiku 5.5: Which Claude Model to UseSonnet 5.5 is the default, Opus 5.5 is for open-ended long-horizon work, and Haiku 5.5 is for bounded steps and subagents. Prices, benchmarks, cost math.
- Claude Sonnet 5.5 Developer Guide: Pricing and API ChangesClaude Sonnet 5.5 costs $2/$10 per million tokens, and cache reads fell to $0.10 on October 7 - half of Opus 5.5 on every line. Pricing math and API changes.
- Claude Sonnet 5 Developer Guide: Migration, API, and Effort LevelsClaude Sonnet 5 migration guide: the three breaking API changes from Sonnet 4.6, the new effort parameter, tokenizer impact and when to use each effort level.
- The Economics of Agent Fleets: Fable 5 Orchestrators, Sonnet 5 WorkersAgent fleet economics: one Fable 5 orchestrator plus Sonnet 5 workers beats an all-frontier fleet for most work. The cost math and the tokenizer caveat.
- Claude Sonnet 5 vs Sonnet 4.6: Should You Upgrade?Claude Sonnet 5 vs Sonnet 4.6: near-Opus 4.8 results on coding and agents, but a new tokenizer uses about 30% more tokens. The upgrade decision, with numbers.
- Claude Sonnet 5 Launch Analysis: The Most Agentic Sonnet YetAnthropic releases Claude Sonnet 5 with improved agentic capabilities, better tool use, and an introductory pricing deal. Here's what developers need to know.
FAQ
How much does Claude Sonnet 5 cost per million tokens?
Claude Sonnet 5 costs $2 per 1M input tokens and $10 per 1M output tokens on Anthropic's first-party API, per platform.claude.com on October 17, 2026. Per 1M tokens, cache reads cost $0.20, and the batch rate is $1 input and $5 output.
What is Claude Sonnet 5's context window?
Claude Sonnet 5 has a 1,000,000-token context window and returns up to 128,000 output tokens per response.
Are Claude Sonnet 5's weights open?
No. Claude Sonnet 5 is a closed-weights model. You call it through Anthropic's API as claude-sonnet-5 or through Vercel AI Gateway as anthropic/claude-sonnet-5.
When was Claude Sonnet 5 released?
Anthropic released Claude Sonnet 5 on June 30, 2026.
Sources
Last verified from platform.claude.com.
- https://platform.claude.com/docs/en/about-claude/pricing
- https://platform.claude.com/docs/en/models/sonnet-5/overview
- https://platform.claude.com/docs/en/about-claude/models/overview
- https://platform.claude.com/docs/en/release-notes/overview
- https://platform.claude.com/docs/en/about-claude/model-deprecations
Newsletter
Get model price changes as they ship
One email per week. New model releases, price cuts and what they mean for your bill.