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Claude Opus 4.5 vs GPT 6 Luna Pro

At a glance

Anthropic's frontier reasoning model for complex software engineering and agentic workflows.

81200K ctx$5.00/$25.00 per M#22/92

OpenAI's GPT-6 Luna served in pro reasoning mode for the hardest problems.

1.1M ctx$0.10/$0.50 per M
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
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Capability
CapabilityECI81.4
Reasoning & Knowledge
Graduate Science80.7%
Math
Competition Math48.1%Research Math20.7%
Coding
Real-World Coding76.7%
Agentic
Terminal Tasks63.1%Novel Reasoning7.8%Task Horizon4.9h
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper98%
Capability
Capability—
Reasoning & Knowledge
Graduate Science—
Math
Competition Math—Research Math—
Coding
Real-World Coding—
Agentic
Terminal Tasks—Novel Reasoning—Task Horizon—
Specs
200K
Context
64K
Max output
Nov 2025
Released
1.1M
Context
128K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input98%$0.10/M tokens
Output98%$0.50/M tokens
Cache read98%$0.01/M tokens
Cache write98%$0.13/M tokens
Web search$0.01/search
Chat with Claude Opus 4.5Go to model
Chat with GPT 6 Luna ProGo to model
Frequently Asked Questions: Claude Opus 4.5 vs GPT 6 Luna Pro▼

Which is better, Claude Opus 4.5 or GPT 6 Luna Pro?

▼

Both Claude Opus 4.5 and GPT 6 Luna Pro 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 4.5 or GPT 6 Luna Pro?

▼

GPT 6 Luna Pro has a lower blended cost. Claude Opus 4.5: $5.00 input / $25.00 output. GPT 6 Luna Pro: $0.10 input / $0.50 output.

Which has a larger context window, Claude Opus 4.5 or GPT 6 Luna Pro?

▼

GPT 6 Luna Pro has a larger context window: Claude Opus 4.5 supports 200K tokens vs GPT 6 Luna Pro at 1.1M tokens.

Do both Claude Opus 4.5 and GPT 6 Luna Pro support vision?

▼

Yes, both Claude Opus 4.5 and GPT 6 Luna Pro support vision/image input.

What are the key differences between Claude Opus 4.5 and GPT 6 Luna Pro?

▼

Key differences: GPT 6 Luna Pro 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 4.5 and GPT 6 Luna Pro for free on idapt.app to see which performs better for your specific needs.

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