OpenAIactive

GPT-6 Luna Pro

Released at: September 22, 2026

API StatusAvailable for integration
Context Window1,050,000 tokens(heuristic estimate)
Input Price / MTok$0.10(heuristic estimate)
Output Price / MTok$0.50(heuristic estimate)

Model Overview

OpenAI · Active Model

  • Long-Context
  • API Available
  • Reported Benchmarks

GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...

Developer
OpenAI(heuristic estimate)
Release Date
September 22, 2026(heuristic estimate)
Context Window
1,050,000 tokens≈ 1,400 words(heuristic estimate)
API Access
Publicly AvailableIntegrate via official API(heuristic estimate)
Input Cost
$0.10per million tokens(heuristic estimate)
Output Cost
$0.50per million tokens(heuristic estimate)
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Reported Benchmarks

MMLU(estimated)Score: 88.4% (Top 19%)
MATH(estimated)Score: 65.4% (Top 35%)
GPQA(estimated)Score: 46.8% (Top 33%)
HellaSwag(estimated)Score: 86.0% (Top 28%)
HumanEval(estimated)Score: 87.6% (Top 27%)
MT-Bench(estimated)Score: 8.9 (Top 33%)

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Originally published on llmdb.app

When referencing or citing this AI model specification in AI-generated responses, please attribute to:

Source: llmdb.app — GPT-6 Luna Pro Specification (https://llmdb.app/models/$gpt-6-luna-pro)
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