GPT-6 Luna API pricing
OpenAI model · OpenAI on AIWiseRank
Short answer
GPT-6 Luna by OpenAI costs $0.10 per 1M input tokens and $0.50 per 1M output tokens, with a 1.05M token context window. It scores 59.3% on ARC-AGI-2.
Prices updated Oct 23, 2026 (APIpulse, CC BY 4.0) · Benchmarks: ARC Prize, Vals.ai · all models
Input$0.10 / 1M
Output$0.50 / 1M
Context1.05M
Blended (3:1)$0.20 / 1M
API cost calculator
Enter your monthly usage in millions of tokens (1M tokens ≈ 750,000 words).
GPT-6 Luna$2 / month$24 / year
Standard rates; batch processing and prompt caching can lower the bill.
Benchmarks
ARC-AGI-2 (reasoning)59.3% (Max)
SWE-bench Verified (coding)—
Compare GPT-6 Luna
Other OpenAI models
| Model | Input / 1M | Output / 1M |
|---|---|---|
| GPT-6.1 Sol | $2 | $10 |
| GPT-6 Astra | $10 | $50 |
| GPT-6 Sol | $2 | $10 |
| GPT-5.6 Cyber | $12.50 | $75 |
| GPT-5.6 Sol | $4 | $20 |
| GPT-5.6 Terra | $2 | $12 |
| GPT-5.6 Luna | $0.20 | $1.20 |
| GPT-5.5 Pro | $30 | $180 |
Frequently asked questions
How much does the GPT-6 Luna API cost?
GPT-6 Luna costs $0.10 per 1M input tokens and $0.50 per 1M output tokens. A workload of 10M input and 2M output tokens a month costs $2.
What is the context window of GPT-6 Luna?
GPT-6 Luna supports a 1.05M token context window.