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Claude Opus 4 vs GPT 5.6 Sol

At a glance
AnthropicClaude Opus 4

World-class coding model with sustained performance on complex agentic tasks.

75200K ctx$15.00/$75.00 per M#40/92
OpenAIGPT 5.6 Sol

OpenAI's GPT-5.6 flagship — built for complex reasoning, agentic coding, and long-running professional work.

1.1M ctx$5.00/$30.00 per M
AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
AnthropicClaude Opus 4
Reasoning
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.4
Reasoning & Knowledge
Graduate Science69.2%
Math
Math Problems85.0%Competition Math42.2%Research Math4.5%
Coding
Real-World Coding70.7%Code Editing70.7%
Agentic
Terminal Tasks—Novel Reasoning1.3%
OpenAIGPT 5.6 Sol
Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Cheaper
Capability
Capability—
Reasoning & Knowledge
Graduate Science94.6%
Math
Math Problems—Competition Math—Research Math—
Coding
Real-World Coding—Code Editing—
Agentic
Terminal Tasks88.8%Novel Reasoning—
Specs
AnthropicClaude Opus 4
200K
Context
32K
Max output
May 2025
Released
OpenAIGPT 5.6 Sol
1.1M
Context
128K
Max output
Jul 2026
Released
Capabilities
AnthropicClaude Opus 4
Vision
Audio
Reasoning
OpenAIGPT 5.6 Sol
Vision
Audio
Reasoning
Pricing
AnthropicClaude Opus 4
Live pricing, shown before you run
Input$15.00/M tokens
Output$75.00/M tokens
Cache read$1.50/M tokens
Cache write$18.75/M tokens
Web search$0.01/search
OpenAIGPT 5.6 Sol
Live pricing, shown before you run
Input$5.00/M tokens
Output$30.00/M tokens
Cache read$0.50/M tokens
Web search$0.01/search
Chat with Claude Opus 4Go to model
Chat with GPT 5.6 SolGo to model
Frequently Asked Questions: Claude Opus 4 vs GPT 5.6 Sol▼

Which is better, Claude Opus 4 or GPT 5.6 Sol?

▼

Both Claude Opus 4 and GPT 5.6 Sol 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 Opus 4 or GPT 5.6 Sol?

▼

GPT 5.6 Sol has a lower blended cost. Claude Opus 4: $15.00 input / $75.00 output. GPT 5.6 Sol: $5.00 input / $30.00 output.

Which has a larger context window, Claude Opus 4 or GPT 5.6 Sol?

▼

GPT 5.6 Sol has a larger context window: Claude Opus 4 supports 200K tokens vs GPT 5.6 Sol at 1.1M tokens.

Do both Claude Opus 4 and GPT 5.6 Sol support vision?

▼

Yes, both Claude Opus 4 and GPT 5.6 Sol support vision/image input.

What are the key differences between Claude Opus 4 and GPT 5.6 Sol?

▼

Key differences: GPT 5.6 Sol is significantly cheaper. 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 Opus 4 and GPT 5.6 Sol for free on idapt.app to see which performs better for your specific needs.

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