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GPT 4o vs Claude Sonnet 5

At a glance

OpenAI's original omni model supporting text and image inputs.

63128K ctx$2.50/$10.00 per M#64/92

Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.

801M ctx$2.00/$10.00 per M#26/92
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
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI63.0
Reasoning & Knowledge
Graduate Science49.2%Expert-Level2.7%Factual Recall—
Math
Math Problems53.3%Competition Math6.4%Research Math0.3%
Coding
Real-World Coding31.0%Code Editing23.1%
Agentic
Task Horizon9min
Reasoning
CI 72.7-84.7Provisional
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter27%Cheaper9%
Capability
CapabilityECI27%80.1
Reasoning & Knowledge
Graduate Science84%90.5%Expert-Level—Factual Recall25.0%
Math
Math Problems—Competition Math1383%94.7%Research Math—
Coding
Real-World Coding—Code Editing—
Agentic
Task Horizon—
Specs
128K
Context
16K
Max output
May 2024
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.50/M tokens
Output$10.00/M tokens
Cache read$1.25/M tokens
Live pricing, shown before you run
Input20%$2.00/M tokens
Output$10.00/M tokens
Cache read84%$0.20/M tokens
Cache write$2.50/M tokens
Web search$0.01/search
Chat with GPT 4oGo to model
Chat with Claude Sonnet 5Go to model
Frequently Asked Questions: GPT 4o vs Claude Sonnet 5▼

Which is better, GPT 4o or Claude Sonnet 5?

▼

Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 63.0). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, GPT 4o or Claude Sonnet 5?

▼

Claude Sonnet 5 has a lower blended cost. GPT 4o: $2.50 input / $10.00 output. Claude Sonnet 5: $2.00 input / $10.00 output.

Which has a larger context window, GPT 4o or Claude Sonnet 5?

▼

Claude Sonnet 5 has a larger context window: GPT 4o supports 128K tokens vs Claude Sonnet 5 at 1M tokens.

Do both GPT 4o and Claude Sonnet 5 support vision?

▼

Yes, both GPT 4o and Claude Sonnet 5 support vision/image input.

What are the key differences between GPT 4o and Claude Sonnet 5?

▼

Key differences: Claude Sonnet 5 has a notably higher capability index (17.1 point gap); only Claude Sonnet 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 GPT 4o and Claude Sonnet 5 for free on idapt.app to see which performs better for your specific needs.

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