Model Comparison

Claude Sonnet 4 vs GPT-4.1 nano

Claude Sonnet 4 significantly outperforms across most benchmarks. GPT-4.1 nano is 34.3x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Claude Sonnet 4 outperforms in 5 benchmarks (GPQA, MMMLU, MMMU, TAU-bench Airline, TAU-bench Retail), while GPT-4.1 nano is better at 0 benchmarks.

Claude Sonnet 4 significantly outperforms across most benchmarks.

Thu Apr 30 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-4.1 nano costs less

For input processing, Claude Sonnet 4 ($3.00/1M tokens) is 30.0x more expensive than GPT-4.1 nano ($0.10/1M tokens).

For output processing, Claude Sonnet 4 ($15.00/1M tokens) is 37.5x more expensive than GPT-4.1 nano ($0.40/1M tokens).

In conclusion, Claude Sonnet 4 is more expensive than GPT-4.1 nano.*

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

Lowest available price from all providers
Thu Apr 30 2026 • llm-stats.com
Anthropic
Claude Sonnet 4
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
OpenAI
GPT-4.1 nano
Input tokens$0.10
Output tokens$0.40
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-4.1 nano accepts 1,047,576 input tokens compared to Claude Sonnet 4's 200,000 tokens. Claude Sonnet 4 can generate longer responses up to 64,000 tokens, while GPT-4.1 nano is limited to 32,768 tokens.

Anthropic
Claude Sonnet 4
Input200,000 tokens
Output64,000 tokens
OpenAI
GPT-4.1 nano
Input1,047,576 tokens
Output32,768 tokens
Thu Apr 30 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Sonnet 4 and GPT-4.1 nano support multimodal inputs.

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

Claude Sonnet 4

Text
Images
Audio
Video

GPT-4.1 nano

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 Sonnet 4

Proprietary

Closed source

GPT-4.1 nano

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Sonnet 4 was released on 2025-05-22, while GPT-4.1 nano was released on 2025-04-14.

Claude Sonnet 4 is 1 month newer than GPT-4.1 nano.

Claude Sonnet 4

May 22, 2025

11 months ago

1mo newer
GPT-4.1 nano

Apr 14, 2025

1.0 years ago

Knowledge Cutoff

When training data ends

GPT-4.1 nano has a documented knowledge cutoff of 2024-05-31, while Claude Sonnet 4's cutoff date is not specified.

We can confirm GPT-4.1 nano's training data extends to 2024-05-31, but cannot make a direct comparison without Claude Sonnet 4's cutoff date.

Claude Sonnet 4

—

GPT-4.1 nano

May 2024

Provider Availability

Claude Sonnet 4 is available from Anthropic, Bedrock, Google. GPT-4.1 nano is available from OpenAI.

Claude Sonnet 4

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

GPT-4.1 nano

openai logo
OpenAI
Input Price:Input: $0.10/1MOutput Price:Output: $0.40/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Higher GPQA score (75.4% vs 50.3%)
Higher MMMLU score (86.5% vs 66.9%)
Higher MMMU score (74.4% vs 55.4%)
Higher TAU-bench Airline score (60.0% vs 14.0%)
Higher TAU-bench Retail score (80.5% vs 22.6%)
OpenAI
Larger context window (1,047,576 tokens)
Less expensive input tokens
Less expensive output tokens
AnthropicClaude Sonnet 4
OpenAIGPT-4.1 nano
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Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Sonnet 4
OpenAI
GPT-4.1 nano

FAQ

Common questions about Claude Sonnet 4 vs GPT-4.1 nano

Claude Sonnet 4 significantly outperforms across most benchmarks. Claude Sonnet 4 is made by Anthropic and GPT-4.1 nano is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
Claude Sonnet 4 scores MMMLU: 86.5%, TAU-bench Retail: 80.5%, GPQA: 75.4%, MMMU: 74.4%, SWE-Bench Verified: 72.7%. GPT-4.1 nano scores MMLU: 80.1%, IFEval: 74.5%, CharXiv-D: 73.9%, MMMLU: 66.9%, Multi-IF: 57.2%.
GPT-4.1 nano is 30.0x cheaper for input tokens. Claude Sonnet 4 costs $3.00/M input and $15.00/M output via anthropic. GPT-4.1 nano costs $0.10/M input and $0.40/M output via openai.
Claude Sonnet 4 supports 200K tokens and GPT-4.1 nano supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (200K vs 1.0M), input pricing ($3.00 vs $0.10/M). See the full comparison above for benchmark-by-benchmark results.
Claude Sonnet 4 is developed by Anthropic and GPT-4.1 nano is developed by OpenAI.