Claude 3.7 Sonnet (thinking)

Name: Anthropic Claude 3.7 Sonnet (thinking)
Price: 3 USD
Availability: InStock
Author: Anthropic

anthropic/claude-3.7-sonnet:thinking

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...

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Input price: $3.00USD / 1M tokens
Output price: $15.00USD / 1M tokens
Context window: N/A
Max output: 64K

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Prompt

Image URL or upload

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64K max outputVision

Input$3.00/MOutput$15.00/MCache read$0.30/MCache write$3.75/M

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Model card

Specifications

Pricing

Input: $3 / 1M tokens
Output: $15 / 1M tokens
Cache read: $0.30 / 1M tokens
Cache write: $3.75 / 1M tokens

Context & modalities

Max output: 64,000 tokens
Input: Text, image
Output: Text

Capabilities

Chat: Supported
Vision: Supported
Reasoning: Supported
Structured output: Not supported
Function calling: Supported
Audio input: Not supported

Access

Provider: Anthropic
Model ID: anthropic/claude-3.7-sonnet:thinking
Execution: sync
Base URL: https://api.sandbase.ai
API: Chat Completions API
Endpoint: /v1/chat/completions
API: Messages API
Endpoint: /v1/messages

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Choose either supported API with unified authentication and usage tracking.

Production API

Chat Completions API endpoint

https://api.sandbase.ai/v1/chat/completions

Model ID

anthropic/claude-3.7-sonnet:thinking

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/chat/completions" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "anthropic/claude-3.7-sonnet:thinking",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"

Choose your model

Compare models

All language models

Model	Context	Input / 1M	Output / 1M	Released
Claude 3.7 Sonnet (thinking)This model `Anthropic`	—	$3.00	$15.00	Feb 24, 2025
Claude Haiku 5.5 `Anthropic`	1M	$0.10	$0.50	Oct 7, 2026
Claude Fable 5.5 `Anthropic`	—	Coming soon	Coming soon	Coming soon
Claude Sonnet 5.5 `Anthropic`	1M	$2.00	$10.00	Sep 28, 2026
Claude Opus 5.5 `Anthropic`	1M	$4.00	$20.00	Sep 22, 2026
Claude Fable 5.1 `Anthropic`	1M	$10.00	$50.00	Sep 1, 2026

Questions

FAQ

How do I call Anthropic Claude 3.7 Sonnet (thinking) through SandBase?

Create a SandBase API key, then send requests with the model ID "anthropic/claude-3.7-sonnet:thinking" to Chat Completions API (/v1/chat/completions) or Messages API (/v1/messages) at https://api.sandbase.ai. The request examples on this page show the exact payload.

How much does Anthropic Claude 3.7 Sonnet (thinking) cost?

$3 per 1M input tokens and $15 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

Which features does Anthropic Claude 3.7 Sonnet (thinking) support?

Anthropic Claude 3.7 Sonnet (thinking) supports vision (image input), reasoning, function calling. See Specifications above for the full list.

Do I need a separate Anthropic account?

No. One SandBase API key and balance gives you access to Anthropic Claude 3.7 Sonnet (thinking) and the other models in the catalog; you do not need to sign up with Anthropic separately.