Claude Opus 4 vs GPT 5.6 Luna
World-class coding model with sustained performance on complex agentic tasks.
OpenAI's fastest, most affordable GPT-5.6 tier for high-volume, latency-sensitive work.
No captured outputs for these models yet.
Frequently Asked Questions: Claude Opus 4 vs GPT 5.6 Luna▼
Which is better, Claude Opus 4 or GPT 5.6 Luna?
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Both Claude Opus 4 and GPT 5.6 Luna 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 Luna?
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GPT 5.6 Luna has a lower blended cost. Claude Opus 4: $15.00 input / $75.00 output. GPT 5.6 Luna: $1.00 input / $6.00 output.
Which has a larger context window, Claude Opus 4 or GPT 5.6 Luna?
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GPT 5.6 Luna has a larger context window: Claude Opus 4 supports 200K tokens vs GPT 5.6 Luna at 1.1M tokens.
Do both Claude Opus 4 and GPT 5.6 Luna support vision?
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Yes, both Claude Opus 4 and GPT 5.6 Luna support vision/image input.
What are the key differences between Claude Opus 4 and GPT 5.6 Luna?
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Key differences: GPT 5.6 Luna is significantly cheaper. Compare full specs on this page.
Which model should I choose for my use case?
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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 Luna for free on idapt.app to see which performs better for your specific needs.