GPT-6 Luna Pro
GPT-6 Luna Pro sits in the frontier tier, built for high-capability reasoning, tool use, and long-form output where capability outweighs cost. Available via OpenAI. 1,050,000-token context. Efficient pricing.
GPT-6 Luna Pro is a multimodal AI model from OpenAI. It costs $0.1000 per million input tokens and $0.5000 per million output tokens (blended $0.2200/M), with a 1,050,000-token context window.
RatesUSD per million tokens. Blend is 70% input, 30% output, our calculation.
From OpenRouter's listing, read on 11 Nov 2026.
- Strong general reasoning
- Tool use & function calling
- Long-form writing
- Production-grade reliability
- Multimodal: handles images alongside text
- Production assistants
- Long-document analysis
- Multi-step agent workflows
- Engineering copilots
Benchmarks
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See all 28 →Frequently asked questions
How much does GPT-6 Luna Pro cost?
GPT-6 Luna Pro costs $0.1000 per million input tokens and $0.5000 per million output tokens, for a blended reference rate of $0.2200 per million tokens.
What is GPT-6 Luna Pro's context window?
GPT-6 Luna Pro supports up to 1,050,000 tokens of context in a single request.
What is GPT-6 Luna Pro best for?
GPT-6 Luna Pro is well suited to Strong general reasoning, Tool use & function calling and Long-form writing.
Who makes GPT-6 Luna Pro?
GPT-6 Luna Pro is developed and served by OpenAI.