Claude Sonnet 5 API pricing
Anthropic's mid-priced workhorse. Claude Sonnet 5 launched on 30 June 2026 at $2 / $10 per 1M tokens, and Anthropic later made that launch price permanent.
Claude Sonnet 5 prices
What it costs in practice
Claude Sonnet 5 at list prices, no batch discount.
| 1,000 chat replies1,500 tokens in and 300 out each | $6.00 |
|---|---|
| Summarising 100 long reports20,000 tokens in and 800 out each | $4.80 |
| A month of a coding agent400 tasks, 85% of input cached | $433 |
The coding-agent example assumes 85% of input is served from cache, typical for agents that resend the same context each step. Model your own workload
Details
claude-sonnet-5- The $2 / $10 launch price was made permanent; a planned rise to $3 / $15 on 1 September was cancelled.
Checked 27 Sep 2026 against Anthropic pricing and TechCrunch, 30 Jun 2026 .
Other Claude Sonnet versions
Sonnet 4.6 and 4.5 are still served at $3 / $15.
| Model | Input / 1M | Output / 1M | Cached input | Context | Released |
|---|---|---|---|---|---|
Claude Sonnet 4.6Previous |
$3.00 | $15.00 | $0.30 | 1M | Feb 2026 |
Claude Sonnet 4.5Previous |
$3.00 | $15.00 | $0.30 | 200K | 29 Sep 2025 |
Version details
Claude Sonnet 4.6
Previous$3.00 / $15.00 per 1M tokenscached $0.30 · batch 50% off · 1M context · 64K max output
Newer option: Claude Sonnet 5 at $2.00 / $10.00. Checked 27 Sep 2026 against Anthropic pricing .
Claude Sonnet 4.5
Previous$3.00 / $15.00 per 1M tokenscached $0.30 · batch 50% off · 200K context · 64K max output
Newer option: Claude Sonnet 5 at $2.00 / $10.00. Checked 27 Sep 2026 against Anthropic pricing .
Compare Claude Sonnet 5
Price history
All changesAnthropic pricing rules
- Batch requests cost 50% less.
- Cache reads are billed at a per-model rate, usually a tenth of the input price or less. Cache writes cost 1.25× input for the 5-minute cache and 2× for the 1-hour cache.
- The full 1M-token context window is billed at standard rates on current models.
Retired Claude Sonnet models
- Retired 15 Jun 2026Claude Sonnet 4 was $3.00 / $15.00 per 1M tokens. Use Claude Sonnet 5 instead.
Questions
How much does Claude Sonnet 5 cost?
As of 27 Sep 2026, Claude Sonnet 5 costs $2 per million input tokens and $10 per million output tokens, and $0.20 per million cached input tokens. Batch requests cost 50% less. Prices checked 27 Sep 2026.
What is Claude Sonnet 5's context window?
1M tokens, with up to 128K tokens of output.
Does Claude Sonnet 5 support prompt caching?
Yes. Repeated input read from the cache costs $0.20 per million tokens, 90% less than normal input.