Claude 3.7 Sonnet vs Claude Sonnet 4.6 Comparison

Comparing Claude 3.7 Sonnet and Claude Sonnet 4.6 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

Claude 3.7 Sonnet outperforms in 0 benchmarks, while Claude Sonnet 4.6 is better at 3 benchmarks (GPQA, MMMLU, SWE-Bench Verified).

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Sonnet 4.6 costs less

For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) costs the same as Claude Sonnet 4.6 ($3.00/1M tokens).

For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) costs the same as Claude Sonnet 4.6 ($15.00/1M tokens).

In conclusion, Claude 3.7 Sonnet and Claude Sonnet 4.6 cost the same.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude 3.7 Sonnet

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

Claude Sonnet 4.6

Input tokens$3.00

Output tokens$15.00

Best providerAnthropic

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Context Window

Maximum input and output token capacity

Both models have the same input context window of 200,000 tokens. Claude 3.7 Sonnet can generate longer responses up to 128,000 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Claude 3.7 Sonnet

Input200,000 tokens

Output128,000 tokens

Claude Sonnet 4.6

Input200,000 tokens

Output64,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and Claude Sonnet 4.6 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3.7 Sonnet

Text

Images

Audio

Video

Claude Sonnet 4.6

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3.7 Sonnet

Proprietary

Closed source

Claude Sonnet 4.6

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Claude Sonnet 4.6 was released on 2026-02-17.

Claude Sonnet 4.6 is 12 months newer than Claude 3.7 Sonnet.

Claude 3.7 Sonnet

Feb 24, 2025

1.0 years ago

Claude Sonnet 4.6

Feb 17, 2026

3 weeks ago

11mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. Claude Sonnet 4.6 is available from Anthropic. The availability of providers can affect quality of the model and reliability.