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Claude Sonnet 5 vs GPT 5.2

At a glance
AnthropicClaude Sonnet 5

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

801M ctx$3.00/$15.00 per M#26/92
OpenAIGPT 5.2

OpenAI's most capable model with adaptive reasoning for complex tasks.

85400K ctx$1.75/$14.00 per M#13/92
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
AnthropicClaude Sonnet 5
Reasoning
CI 72.7-84.7
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI80.1
Reasoning & Knowledge
Graduate Science90.5%Factual Recall25.0%
Math
Competition Math94.7%Research Math—
Coding
Real-World Coding—
Agentic
Terminal Tasks—Novel Reasoning—Task Horizon—
OpenAIGPT 5.2
Reasoning
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
SmarterCheaper
Capability
CapabilityECI85.1
Reasoning & Knowledge
Graduate Science91.4%Factual Recall38.9%
Math
Competition Math96.1%Research Math40.7%
Coding
Real-World Coding73.8%
Agentic
Terminal Tasks64.9%Novel Reasoning52.9%Task Horizon5.9h
Specs
AnthropicClaude Sonnet 5
1M
Context
64K
Max output
Jun 2026
Released
OpenAIGPT 5.2
400K
Context
128K
Max output
Dec 2025
Released
Capabilities
AnthropicClaude Sonnet 5
Vision
Audio
Reasoning
OpenAIGPT 5.2
Vision
Audio
Reasoning
Pricing
AnthropicClaude Sonnet 5
Live pricing, shown before you run
Input$3.00/M tokens
Output$15.00/M tokens
Cache read$0.30/M tokens
Cache write$3.75/M tokens
Web search$0.01/search
OpenAIGPT 5.2
Live pricing, shown before you run
Input$1.75/M tokens
Output$14.00/M tokens
Cache read$0.17/M tokens
Web search$0.01/search
Chat with Claude Sonnet 5Go to model
Chat with GPT 5.2Go to model
Frequently Asked Questions: Claude Sonnet 5 vs GPT 5.2▼

Which is better, Claude Sonnet 5 or GPT 5.2?

▼

Based on the Capability Index, GPT 5.2 scores higher (85.1 vs 80.1). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Sonnet 5 or GPT 5.2?

▼

GPT 5.2 has a lower blended cost. Claude Sonnet 5: $3.00 input / $15.00 output. GPT 5.2: $1.75 input / $14.00 output.

Which has a larger context window, Claude Sonnet 5 or GPT 5.2?

▼

Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs GPT 5.2 at 400K tokens.

Do both Claude Sonnet 5 and GPT 5.2 support vision?

▼

Yes, both Claude Sonnet 5 and GPT 5.2 support vision/image input.

What are the key differences between Claude Sonnet 5 and GPT 5.2?

▼

Claude Sonnet 5 and GPT 5.2 have similar overall capabilities. The main differences lie in pricing, context window size, and provider-specific strengths. Use this comparison page to review all metrics side by side.

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 and GPT 5.2 for free on idapt.app to see which performs better for your specific needs.

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