GPT-6 Luna API Pricing
OpenAI · released 2026-09-22
Also searched as: GPT 6 Luna pricing · 6 Luna price
GPT-6 Luna price
0.010¢ / 1K
0.050¢ / 1K
0.020¢ / 1K
Higher rates apply above a context threshold; see the official site
Official list price from OpenAI, as recorded by models.dev
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.02¢ |
| RAG query | 4,000 in / 500 out | 0.065¢ |
| Long document summary | 50,000 in / 1,000 out | 0.55¢ |
| Code review of a 2k-line file | 30,000 in / 2,000 out | 0.4¢ |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $6.00 |
Cost = (input tokens ÷ 1,000,000 × $0.10) + (output tokens ÷ 1,000,000 × $0.50).
Benchmarks
| Benchmark | Value | Source | As of |
|---|---|---|---|
| Epoch Capabilities Index (ECI) | 156.7 | epoch | 2026-09-22 |
| Epoch Mock AIME accuracy | 98.9% | epoch | 2026-09-22 |
| Epoch FrontierMath (T1–3) accuracy | 78.9% | epoch | 2026-09-22 |
| Arena text rating | 1440 | arena | 2026-11-06 |
| Arena coding rating (human preference votes, not task accuracy) | 1501 | arena | 2026-11-06 |
| Arena math rating | 1451 | arena | 2026-11-06 |
| Arena WebDev rating | 1578 | arena | 2026-11-06 |
LiveBench
Shown on this model page only — LiveBench data never appears in any leaderboard, comparison table or structured data on this site.
| LiveBench metric | Value | As of |
|---|---|---|
| LiveBench Global Average | 72.0 | 2026-06-25 |
| LiveBench Reasoning | 81.8 | 2026-06-25 |
| LiveBench Coding | 79.0 | 2026-06-25 |
| LiveBench Agentic Coding | 51.2 | 2026-06-25 |
| LiveBench Mathematics | 89.1 | 2026-06-25 |
| LiveBench Data Analysis | 73.4 | 2026-06-25 |
| LiveBench Language | 73.8 | 2026-06-25 |
| LiveBench Instruction Following | 55.9 | 2026-06-25 |
LiveBench leaderboard (livebench.ai, github.com/LiveBench/new-livebench), CC BY-SA 4.0 — livebench.ai · github.com/LiveBench/new-livebench · CC BY-SA 4.0
Similar ECI, lower price
| Model | ECI | Blended $/1M |
|---|---|---|
| GLM-5.3-Flash | 153.6 | $0.1942 |
More from OpenAI
| Model | Released | Blended $/1M |
|---|---|---|
| GPT-6.1 Terra | 2026-10-26 | $2.00 |
| GPT-6.1 Sol | 2026-09-29 | $4.00 |
| GPT-6 Sol | 2026-09-22 | $4.00 |
| GPT-Live 1 | 2026-09-10 | — |
| GPT Image 2.5 Sunburst | 2026-09-08 | $11.25 |
| GPT Image 2.5 Flare | 2026-09-08 | $11.25 |
| GPT-6 Astra (Fast) | 2026-09-04 | — |
| GPT-6 Astra | 2026-09-04 | $20.00 |
Count tokens & estimate cost for GPT-6 Luna See GPT-6 Luna on the leaderboard
Prices: OpenAI's official list price as recorded by models.dev; benchmarks: see sources below; last synced 2026-11-07.
FAQ
Who develops GPT-6 Luna?
GPT-6 Luna is developed by OpenAI, released 2026-09-22.
How much does GPT-6 Luna cost per million tokens?
GPT-6 Luna costs $0.10 per 1M input tokens and $0.50 per 1M output tokens ($0.20 blended), per OpenAI's official list price as recorded by models.dev.
What is the GPT-6 Luna API price?
The GPT-6 Luna API price is $0.10 per 1M input tokens and $0.50 per 1M output tokens ($0.20 per 1M blended).
How much does GPT-6 Luna cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.02¢ on GPT-6 Luna, at $0.10/1M input and $0.50/1M output.
Is GPT-6 Luna free?
GPT-6 Luna's official API list price is $0.10 per 1M input tokens and $0.50 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check OpenAI's site for those.
How does GPT-6 Luna rank on benchmarks?
GPT-6 Luna scores 156.7 on the Epoch Capabilities Index (ECI), ranking #31 of 107 models we track with a published ECI score.
Is there a cheaper model with a similar ECI to GPT-6 Luna?
Yes — GLM-5.3-Flash scores a similar ECI (153.6) at $0.1942/1M blended, versus $0.20/1M for GPT-6 Luna.
Where does this data come from?
Pricing for GPT-6 Luna comes from models.dev and LiteLLM (open MIT-licensed catalogs); benchmark scores come from Epoch AI and LMArena (open CC BY 4.0 licenses); LiveBench scores (below) are CC BY-SA 4.0 — see /data-sources/. Last synced 2026-11-07.