Anthropic: Claude 3.7 Sonnet (thinking)✓ Catalog verified
Claude 3.7 Sonnet is an advanced large language model with improved reasoning, coding, and problem-solving capabilities. It introduces a hybrid reasoning approach, allowing users to choose between rapid responses and extended, step-by-step processing for complex tasks. The model demonstrates notable improvements in coding, particularly in front-end development and full-stack updates, and excels in agentic workflows, where it can autonomously navigate multi-step processes. Claude 3.7 Sonnet maintains performance parity with its predecessor in standard mode while offering an extended reasoning mode for enhanced accuracy in math, coding, and instruction-following tasks. Read more at the blog post here
Overview
Claude 3.7 Sonnet is an advanced large language model with improved reasoning, coding, and problem-solving capabilities. It introduces a hybrid reasoning approach, allowing users to choose between rapid responses and extended, step-by-step processing for complex tasks. The model demonstrates notable improvements in coding, particularly in front-end development and full-stack updates, and excels in agentic workflows, where it can autonomously navigate multi-step processes. Claude 3.7 Sonnet maintains performance parity with its predecessor in standard mode while offering an extended reasoning mode for enhanced accuracy in math, coding, and instruction-following tasks. Read more at the blog post here
Access: available through the official Anthropic API. Context window: 200K.
Specifications
| API identifier | anthropic/claude-3.7-sonnet:thinking |
| Provider | Anthropic |
| Model type | Multimodal LLM |
| Context window | 200K catalog |
| Input modalities | text · image · file |
| Output modalities | text |
| Released | Feb 24, 2025 |
| Tokenizer | Claude |
| Moderated | No |
| Architecture modality | text+image+file->text |
| Scheduled expiry | 2026-05-05 |
API defaults
{
"top_p": null,
"temperature": null,
"frequency_penalty": null
}Pricing
Live pricing components for anthropic/claude-3.7-sonnet:thinking as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $0.000003 | $3.00 / 1M | Per input token |
| Completion tokens | $0.000015 | $15.00 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | $0.01 | $0.010000 | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$4.5Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | ✓ Supported | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call Anthropic: Claude 3.7 Sonnet (thinking) through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="anthropic/claude-3.7-sonnet:thinking",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| OpenAI: o1 | OpenAI | 200K | $15.00 | View → |
| OpenAI: o1-pro | OpenAI | 200K | $150.00 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does Anthropic: Claude 3.7 Sonnet (thinking) cost?
$3.00 per 1M input tokens and $15.00 per 1M output tokens on the official Anthropic API.
What is the context window of Anthropic: Claude 3.7 Sonnet (thinking)?
Anthropic: Claude 3.7 Sonnet (thinking) supports up to 200K tokens of context.
Does Anthropic: Claude 3.7 Sonnet (thinking) support tool / function calling?
Yes, Anthropic: Claude 3.7 Sonnet (thinking) supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access Anthropic: Claude 3.7 Sonnet (thinking)?
Use the official Anthropic API with the model id `anthropic/claude-3.7-sonnet:thinking`. See the Quick start section above for code examples.