Model Library
AnthropicReleased May 22, 2025Claude 4 Sonnet
Anthropic · Released May 22, 2025
Intelligence score
29
At a glance
- Intelligence
- 29
- Speed
- —
- Latency
- —
- Input price
- $3.00per 1M tokens
- Output price
- $15.00per 1M tokens
- Context window
- 4tokens
- Parameters
- —
Summary
Comparison summary
Claude 4 Sonnet (Reasoning) scores 29 on the Artificial Analysis Intelligence Index, placing it above average among other reasoning models in a similar price tier (median: 28). Claude 4 Sonnet (Reasoning) costs $3.00 per 1M input tokens (somewhat higher than average, median: $1.50) and $15.00 per 1M output tokens (somewhat higher than average, median: $8.40), based on Anthropic's API.
Specifications
Technical specifications
| Model name | Claude 4 Sonnet |
|---|---|
| Provider | Anthropic |
| Release date | May 22, 2025 |
| Intelligence score | 29 |
| Speed | — |
| Latency (TTFT) | — |
| Input price | $3.00 / 1M tokens |
| Output price | $15.00 / 1M tokens |
| Context window | 4 tokens |
| Parameters | — |
| Reasoning | Yes |
| Input modalities | text, image |
| Output modalities | — |
| Open weights | No |
| License | — |
| API availability | — |
| Source | Model Intelligence legacy profile: claude-4-sonnet-thinking |
Pricing
Token prices
Price per 1M tokens
Claude 4 Sonnet, as listed in the catalog record
- Input$3.00
- Output$15.00
| Token type | Price per 1M |
|---|---|
| Input | $3.00 |
| Output | $15.00 |
Model Intelligence legacy profile: claude-4-sonnet-thinking
FAQ · 18
Frequently asked questions
Claude 4 Sonnet (Reasoning) was released on May 22, 2025.
Claude 4 Sonnet (Reasoning) was created by Anthropic.
Claude 4 Sonnet (Reasoning) scores 29 on the Artificial Analysis Intelligence Index, placing it above average among other reasoning models in a similar price tier (median: 28).
Claude 4 Sonnet (Reasoning) costs $3.00 per 1M input tokens (somewhat higher than average, median: $1.50) and $15.00 per 1M output tokens (somewhat higher than average, median: $8.40), based on Anthropic's API.
Claude 4 Sonnet (Reasoning) costs $3.00 per 1M input tokens and $15.00 per 1M output tokens (based on Anthropic's API). For a blended rate (7:2:1 cache hit/input/output ratio), this is $2.31 per 1M tokens. Pricing may vary by provider.
When evaluated on the Intelligence Index, Claude 4 Sonnet (Reasoning) generated 56M output tokens, which is better than average compared to other reasoning models in a similar price tier (median: 72M).
Yes, Claude 4 Sonnet (Reasoning) is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Claude 4 Sonnet (Reasoning) supports text and image input.
Claude 4 Sonnet (Reasoning) supports text output.
Yes, Claude 4 Sonnet (Reasoning) supports image input and can analyze, describe, and answer questions about images.
Yes, Claude 4 Sonnet (Reasoning) is multimodal. It can process text and image input and generate text output.
Claude 4 Sonnet (Reasoning) has a context window of 1.0M tokens. This determines how much text and conversation history the model can process in a single request.
No, Claude 4 Sonnet (Reasoning) is proprietary. The model weights are not publicly available.
Claude 4 Sonnet (Reasoning) is a proprietary model and Anthropic has not disclosed the model size or parameter count.
Claude 4 Sonnet (Reasoning) achieves a score of 29 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Claude 4 Sonnet (Reasoning) has a knowledge cutoff of March 2025. The model's training data includes information up to this date.
Yes, Claude 4 Sonnet (Reasoning) is available via API through 3 providers.
Claude 4 Sonnet (Reasoning) is available through 3 API providers.