Model Comparison

Claude 3.7 Sonnet vs Claude Opus 4.1

Claude Opus 4.1 shows notably better performance in the majority of benchmarks. Claude 3.7 Sonnet is 5.0x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Claude 3.7 Sonnet outperforms in 2 benchmarks (GPQA, TAU-bench Airline), while Claude Opus 4.1 is better at 5 benchmarks (AIME 2025, MMMLU, SWE-Bench Verified, TAU-bench Retail, Terminal-Bench).

Claude Opus 4.1 shows notably better performance in the majority of benchmarks.

Mon Apr 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude 3.7 Sonnet costs less

For input processing, Claude 3.7 Sonnet ($3.00/1M tokens) is 5.0x cheaper than Claude Opus 4.1 ($15.00/1M tokens).

For output processing, Claude 3.7 Sonnet ($15.00/1M tokens) is 5.0x cheaper than Claude Opus 4.1 ($75.00/1M tokens).

In conclusion, Claude Opus 4.1 is more expensive than Claude 3.7 Sonnet.*

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

Lowest available price from all providers
Mon Apr 13 2026 • llm-stats.com
Anthropic
Claude 3.7 Sonnet
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
Anthropic
Claude Opus 4.1
Input tokens$15.00
Output tokens$75.00
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 Opus 4.1 is limited to 32,000 tokens.

Anthropic
Claude 3.7 Sonnet
Input200,000 tokens
Output128,000 tokens
Anthropic
Claude Opus 4.1
Input200,000 tokens
Output32,000 tokens
Mon Apr 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3.7 Sonnet and Claude Opus 4.1 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 Opus 4.1

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 Opus 4.1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3.7 Sonnet was released on 2025-02-24, while Claude Opus 4.1 was released on 2025-08-05.

Claude Opus 4.1 is 5 months newer than Claude 3.7 Sonnet.

Claude 3.7 Sonnet

Feb 24, 2025

1.1 years ago

Claude Opus 4.1

Aug 5, 2025

8 months ago

5mo 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 Opus 4.1 is available from Anthropic, Bedrock, Google.

Claude 3.7 Sonnet

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M
google logo
Google
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Claude Opus 4.1

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Less expensive input tokens
Less expensive output tokens
Higher GPQA score (84.8% vs 80.9%)
Higher TAU-bench Airline score (58.4% vs 56.0%)
Anthropic
Higher AIME 2025 score (78.0% vs 54.8%)
Higher MMMLU score (89.5% vs 86.1%)
Higher SWE-Bench Verified score (74.5% vs 70.3%)
Higher TAU-bench Retail score (82.4% vs 81.2%)
Higher Terminal-Bench score (43.3% vs 35.2%)
AnthropicClaude 3.7 Sonnet
AnthropicClaude Opus 4.1
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3.7 Sonnet
Anthropic
Claude Opus 4.1

FAQ

Common questions about Claude 3.7 Sonnet vs Claude Opus 4.1

Claude Opus 4.1 shows notably better performance in the majority of benchmarks. Claude 3.7 Sonnet is made by Anthropic and Claude Opus 4.1 is made by Anthropic. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Claude 3.7 Sonnet scores MATH-500: 96.2%, IFEval: 93.2%, MMMLU: 86.1%, GPQA: 84.8%, TAU-bench Retail: 81.2%. Claude Opus 4.1 scores MMMLU: 89.5%, TAU-bench Retail: 82.4%, GPQA: 80.9%, AIME 2025: 78.0%, MMMU (validation): 77.1%.
Claude 3.7 Sonnet is 5.0x cheaper for input tokens. Claude 3.7 Sonnet costs $3.00/M input and $15.00/M output via anthropic. Claude Opus 4.1 costs $15.00/M input and $75.00/M output via anthropic.
Claude 3.7 Sonnet supports 200K tokens and Claude Opus 4.1 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include input pricing ($3.00 vs $15.00/M). See the full comparison above for benchmark-by-benchmark results.