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Claude Sonnet 5.5 vs GPT 4.1

At a glance

Anthropic's Sonnet-class model for well-scoped everyday work, a direct upgrade over Claude Sonnet 5.

1M ctx$2.00/$10.00 per M

OpenAI's flagship GPT-4.1 with advanced instruction following and long context.

701.0M ctx$2.00/$8.00 per M#55/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Capability
Capability—
Reasoning & Knowledge
Graduate Science43%95.6%Expert-Level—Factual Recall50%46.5%
Math
Math Problems—Competition Math161%100.0%Research Math—
Coding
Real-World Coding—Code Editing—
Agentic
Novel Reasoning—
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Cheaper13%
Capability
CapabilityECI70.4
Reasoning & Knowledge
Graduate Science66.9%Expert-Level5.4%Factual Recall31.1%
Math
Math Problems83.0%Competition Math38.3%Research Math5.5%
Coding
Real-World Coding48.5%Code Editing52.4%
Agentic
Novel Reasoning0.4%
Specs
1M
Context
128K
Max output
Sep 2026
Released
1.0M
Context
33K
Max output
Apr 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$10.00/M tokens
Cache read60%$0.20/M tokens
Cache write$2.50/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$2.00/M tokens
Output20%$8.00/M tokens
Cache read$0.50/M tokens
Web search$0.01/search
Chat with Claude Sonnet 5.5Go to model
Chat with GPT 4.1Go to model
Frequently Asked Questions: Claude Sonnet 5.5 vs GPT 4.1▼

Which is better, Claude Sonnet 5.5 or GPT 4.1?

▼

Both Claude Sonnet 5.5 and GPT 4.1 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Claude Sonnet 5.5 or GPT 4.1?

▼

GPT 4.1 has a lower blended cost. Claude Sonnet 5.5: $2.00 input / $10.00 output. GPT 4.1: $2.00 input / $8.00 output.

Which has a larger context window, Claude Sonnet 5.5 or GPT 4.1?

▼

GPT 4.1 has a larger context window: Claude Sonnet 5.5 supports 1M tokens vs GPT 4.1 at 1M tokens.

Do both Claude Sonnet 5.5 and GPT 4.1 support vision?

▼

Yes, both Claude Sonnet 5.5 and GPT 4.1 support vision/image input.

What are the key differences between Claude Sonnet 5.5 and GPT 4.1?

▼

Key differences: only Claude Sonnet 5.5 offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Sonnet 5.5 and GPT 4.1 for free on idapt.app to see which performs better for your specific needs.

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