Claude 3.7 Sonnet vs Claude Sonnet 4
Claude 3.7 Sonnet and Claude Sonnet 4 are closely matched at 24.1 and 24.3 on the LLM Stats Score. Claude 3.7 Sonnet and Claude Sonnet 4 cost the same.
Anthropic · Anthropic · Updated for 2026
Which is better?
Claude 3.7 Sonnet and Claude Sonnet 4 are closely matched on the overall LLM Stats Score at 24.1 and 24.3.
In the 8 individual benchmarks reported for both models, Claude Sonnet 4 wins 5; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude 3.7 Sonnet
- you want predictable pricing at $3.00/M input and $15.00/M output
Choose Claude Sonnet 4
- you value its reported benchmark strengths — it wins 5 of 8 exact shared results
- you want the most recent training data — it shipped May 2025
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
11 reported for Claude 3.7 Sonnet · 8 for Claude Sonnet 4
Claude 3.7 Sonnet outperforms in 3 benchmarks (GPQA, MMMU, TAU-bench Retail), while Claude Sonnet 4 is better at 5 benchmarks (AIME 2025, MMMLU, SWE-Bench Verified, TAU-bench Airline, Terminal-Bench).
Claude Sonnet 4 shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) costs the same as Claude Sonnet 4 ($3.00/1M tokens).
For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) costs the same as Claude Sonnet 4 ($15.00/1M tokens).
In conclusion, Claude 3.7 Sonnet and Claude Sonnet 4 cost the same.*
* Using a 3:1 ratio of input to output tokens
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 is limited to 64,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude 3.7 Sonnet and Claude Sonnet 4 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude 3.7 Sonnet
Claude Sonnet 4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude 3.7 Sonnet was released on 2025-02-24, while Claude Sonnet 4 was released on 2025-05-22.
Claude Sonnet 4 is 3 months newer than Claude 3.7 Sonnet.
Feb 24, 2025
1.5 years ago
May 22, 2025
1.3 years ago
2mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude 3.7 Sonnet is available from Anthropic, Bedrock, Google. Claude Sonnet 4 is available from Anthropic, Bedrock, Google.
Claude 3.7 Sonnet
Claude Sonnet 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3.7 Sonnet and Claude Sonnet 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3.7 Sonnet vs Claude Sonnet 4.