GPT-5.6 Luna Pro
OpenAI · openai/gpt-5.6-luna-pro
GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...
GPT-5.6 Luna Pro ranks #148 of 377 models in the default AI Benchmark Hub order (quality first, then cost). At $0.70 blended per million tokens, it is cheaper than 60% of models with published API pricing. Its 1,050,000-token context window is 4.0× the catalog median (262,144 tokens).
Context
Max output: 128000
Pricing
Output / 1M: 1.20
Blend / 1M: 0.70
Quality
Provider
Moderated: yes
Monthly cost at this blended rate
Estimated API spend if every token is billed at $0.70per million (the blend of this model's input and output prices). Real bills depend on the input/output mix.
| Tokens / month | Est. cost (USD) |
|---|---|
| 1,000,000 | $0.70 |
| 10,000,000 | $7.00 |
| 100,000,000 | $70.00 |
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Closest API price
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