GPT-6 Luna
Last verified October 2, 2026 · OpenAI pricing ↗$0.100/1M input · $0.500/1M output · 1.1M context · OpenAI
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Pricing Details
OpenAILaunched September 22, 2026 with GPT-6 Sol. Card: $0.10 input, $0.01 cached input, $0.125 cache write, $0.50 output. Half of GPT-5.6 Luna's $0.20 input and 58% under its $1.20 output; 1/20th of GPT-6.1 Sol on input and output, 1/10th on cached input. LONG CONTEXT: above 272,000 input tokens the whole request bills $0.20 input / $0.02 cached / $0.25 cache write / $0.75 output. Batch and Flex 50%: $0.05 / $0.005 / $0.25 short, $0.10 / $0.01 / $0.375 long. Fast mode 2x: $0.20 / $0.02 / $1.00 (long $0.40 / $1.50). No Ultrafast (Astra only as of 2026-09-29). Regional processing +10%. Bedrock: global CRIS at list, US Geo/in-Region +10% ($0.11 / $0.55), standard tier only. Azure page still says prices are being processed (2026-10-02). Context 1,050,000 (922,000 max input + 128,000 max output). Reasoning effort none/low/medium (default)/high/xhigh/max. Knowledge cutoff May 18, 2026. 2026-09-25 changelog: fixed an image-encoding bug that degraded image understanding in GPT-6 Sol and Luna; OpenAI says rerun image evals. Artificial Analysis Intelligence Index v4.3.2 leaderboard (read 2026-10-02): max 37 at $0.07 per task (model page shows 38); xhigh 34 / $0.04; high 32 / $0.03; medium 29 / $0.02; non-reasoning 18 / $0.01; low listed at 21 / $0.0045, cheaper than non-reasoning, likely a data error. GPT-5.6 Luna max 37 / $0.18; GPT-6.1 Sol low 42 / $0.13; MiMo-V2.6-Flash 38 / $0.06 (unrounded $0.0622 vs Luna $0.0679). Max effort ~124s to first token, ~127 tok/s. Vals Index v2.1 (2026-09-30): 51.22% at $0.43 per test (GPT-5.6 Luna 51.69% / $0.82, DeepSeek Flash 51.32% / $0.33, MiMo-V2.6-Flash 53.23% / $0.20). Model ID: gpt-6-luna.
Input / 1M tokens
$0.1
Output / 1M tokens
$0.5
Context Window
1.1M
Max Output
128K
Price History
Launched at current price on 2026-09-22. No price changes recorded since.
Frequently Asked Questions
Common questions about GPT-6 Luna pricing and usage
Read More About GPT-6 Luna
Eleven decision models launched in 17 days and none of them bill for output. On a support-ticket classifier output was a quarter of the bill, and Cloudflare's Clef costs more per ticket than GPT-6 Luna.
October 5, 2026 · 7 min read
GPT-6 Luna's tokens cost a twentieth of GPT-6.1 Sol's. On Artificial Analysis a finished task costs about half, and Sol on low effort scores five points higher than Luna on max.
October 2, 2026 · 6 min read