GPT-5.6 Luna API Pricing — $0.20/M input, $1.20/M output
GPT-5.6 model optimized for cost-sensitive, high-volume, and latency-sensitive tasks.
Speed
Tokens / sec
126
TTFT
300 ms
Rank
#11 of 31
$ / M ÷ t/s
$0.0036
Measured with 5 runs on a fixed prompt — see the full methodology.
Cost at scale
| Tokens / month | Est. cost (blended 3:1) |
|---|---|
| 100,000 | $0.04 |
| 1,000,000 | $0.45 |
| 10,000,000 | $4.50 |
| 100,000,000 | $45.00 |
How GPT-5.6 Luna compares
GPT-5 Nano — $0.14/MGPT-4o Mini — $0.26/MGPT-5.4 Nano — $0.46/MGPT-5 Mini — $0.69/MGPT-5.4 Mini — $1.69/MCodestral — $0.45/MGPT-OSS 120B (Cerebras) — $0.45/MGPT-5.4 Nano — $0.46/M
Head-to-head comparisons
GPT-5.6 Luna vs DeepSeek V4 ProGPT-5.6 Luna vs GPT-4o MiniGPT-5.6 Luna vs GPT-OSS 120BGPT-5.6 Luna vs DeepSeek V4 Flash
FAQ
Is GPT-5.6 Luna cheaper than Codestral?
GPT-5.6 Luna costs $0.45/M blended tokens, Codestral costs $0.45/M — Codestral is cheaper.
How much does 1 million tokens cost with GPT-5.6 Luna?
At a 3:1 input:output ratio, 1 million blended tokens costs approximately $0.45. Pure input costs $0.20/M; pure output costs $1.20/M.
Who provides GPT-5.6 Luna?
GPT-5.6 Luna is served by OpenAI. Pricing was last verified on 2026-07-30 against https://openai.com/api/pricing.
