Claude Sonnet 5 API pricing (August 2026)
Introductory rate through 31 Aug 2026 — rises to $3 in / $15 out on 1 Sep 2026.
What it costs at real volumes
A chat-shaped workload: 800 input tokens and 300 output tokens per request, no caching, no batch.
Specifications
- Provider
- Anthropic Claude
- Context window
- 1.0M tokens
- Max output
- 128K tokens
- Tier
- mid
- Status
- GA
- Blended $/1M (3:1)
- $4.00
- Cache break-even hit rate
- 22%
- Prices verified
- 4 Aug 2026
Source: Anthropic Claude pricing. Finitizer is not affiliated with Anthropic Claude.
Similar models
Other claude models
- Claude Opus 5+$6.00
- Claude Opus 4.1+$26.00
- Claude Sonnet 4.5+$2.00
- Claude Haiku 4.5-$2.00
- Claude Haiku 3.5-$2.40
Frequently asked questions
How much does Claude Sonnet 5 cost per 1M tokens?
Claude Sonnet 5 costs $2.00 per million input tokens and $10.00 per million output tokens at Anthropic Claude list prices. Output is 5.0x the input rate, so the input:output ratio of your workload drives the real cost more than the headline price.
Does Claude Sonnet 5 support prompt caching?
Yes. Cached input is billed at $0.200 per million tokens, 10x cheaper than uncached input. Cache writes carry a premium, so caching only pays above roughly a 22% hit rate.
What is the batch discount for Claude Sonnet 5?
Requests submitted through the asynchronous batch endpoint are billed at 50% off both input and output rates, bringing input to $1.00 and output to $5.00 per million tokens.
What is Claude Sonnet 5's context window?
1.0M tokens of context with up to 128K output tokens per request. A larger context window raises the ceiling on what you can send, not the price per token — but filling it on every request is one of the most common causes of an unexpected bill.
Running Claude Sonnet 5 in production?
Finitizer TokenOps attributes real token spend to teams, features, and prompts — so you find out which workload moved the bill before the invoice does.