claude-sonnet-4-5 API pricing
Anthropic charges $3 per million input tokens and $15 per million output tokens for claude-sonnet-4-5, and $0.3 per million cached input tokens. A typical request of 1,000 input and 500 output tokens costs $0.0105, or $0.00525 through the batch API.
Prices updated October 28, 2026
Input / 1M tokens
$3
Output / 1M tokens
$15
Cached input / 1M tokens
$0.3
Typical request
$0.0105
claude-sonnet-4-5 price per million tokens
| Token type | Standard | Batch API |
|---|---|---|
| Input | $3 | $1.5 |
| Cached input | $0.3 | $0.15 |
| Output | $15 | $7.5 |
claude-sonnet-4-5 supports a 200K-token context window, up to 64K output tokens, image input, tool calling and reasoning.
What claude-sonnet-4-5 costs per request
| Request | 1 request | 1,000 requests | 1M requests |
|---|---|---|---|
| Short chat message (300 in, 200 out) | $0.0039 | $3.90 | $3,900.00 |
| Typical request (1K in, 500 out) | $0.0105 | $10.50 | $10,500.00 |
| Long document summary (20K in, 1K out) | $0.075 | $75.00 | $75,000.00 |
| Coding agent step (50K in, 2K out) | $0.18 | $180.00 | $180,000.00 |
At standard rates. A token is about 4 characters of English text, so 1,000 tokens is roughly 750 words. Anthropic counts tokens with its own tokenizer, so the same text can be a different number of tokens.
Models with a similar price
| Model | Provider | Input / 1M | Cached input / 1M | Output / 1M | Typical request |
|---|---|---|---|---|---|
| gpt-5.6-terra | OpenAI | $2 | $0.2 | $12 | $0.008 |
| gemini-3.1-pro-preview | Google Gemini | $2 | $0.2 | $12 | $0.008 |
| gpt-5.2 | OpenAI | $1.75 | $0.175 | $14 | $0.00875 |
| gpt-5.4 | OpenAI | $2.5 | $0.25 | $15 | $0.01 |
| claude-sonnet-4-6 | Anthropic | $3 | $0.3 | $15 | $0.0105 |
| gpt-5.6 | OpenAI | $4 | $0.4 | $20 | $0.014 |
| gpt-5.6-sol | OpenAI | $4 | $0.4 | $20 | $0.014 |
| claude-opus-5-5 | Anthropic | $4 | $0.2 | $20 | $0.014 |
Other Anthropic models
- claude-fable-5 $10 / $50
- claude-fable-5-1 $10 / $50
- claude-haiku-4-5 $1 / $5
- claude-haiku-5-5 $0.1 / $0.5
- claude-mythos-5 $10 / $50
- claude-mythos-5-1 $10 / $50
- claude-opus-4-5 $5 / $25
- claude-opus-4-6 $5 / $25
- claude-opus-4-7 $5 / $25
- claude-opus-4-8 $5 / $25
- claude-opus-5 $5 / $25
- claude-opus-5-5 $4 / $20
- claude-sonnet-4-6 $3 / $15
- claude-sonnet-5 $2 / $10
- claude-sonnet-5-5 $2 / $10
Source: Anthropic pricing.