OpenAI · Released Sep 22, 2026
GPT-6 Luna
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...
- Top 14%OTIS Mock AIME
- Top 20%FrontierMath
- Top 24%CritPt
- Top 25%FrontierMath Tier 4
- Released
- Sep 22 2026
- Context window
- 1.05M 128K out
- Input / 1M tokens
- $0.10 from $0.05
- Output / 1M tokens
- $0.50 from $0.25
Where to run it
35 providers compared
Included in GitLab Duo, OpenCode Go. Cheapest: OpenAI at $0.05 / $0.25 per 1M input / output tokens — 75% less than the priciest option.
| Provider | Input | Output | Cache read | Context | Max output | Uptime | vs. best |
|---|---|---|---|---|---|---|---|
| GitLab Duosubscription plan | Plan | Plan | Plan | 1.05M | 128K | — | Plan |
| OpenCode Gosubscription plan | Plan | Plan | Plan | 1.05M | 128K | — | Plan |
| OpenAI | $0.05 | $0.25 | $0.005 | 1.05M | 128K | 82.5%24h | Cheapest |
| OpenAI | $0.10 | $0.50 | $0.01 | 1.05M | 128K | 100%24h | +100% |
| Azure | $0.10 | $0.50 | $0.01 | 1.05M | 128K | 100%24h | +100% |
| NanoGPT | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Cloudflare AI Gateway | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Venice AI | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Boundless | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Kilo Gateway | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Vercel AI Gateway | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| LLM Gateway | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| AIHubMix | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| 302.AI | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| DigitalOcean | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| GitHub Copilot | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Perplexity Agent | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Aixy | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Prime Inference | $0.10 | $0.50 | — | 1.05M | 128K | — | +100% |
| Neon | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Azure Cognitive Services | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Vivgrid | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| CrossModel | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| DevPass (LLM Gateway) | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| CommandCode | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Merge Gateway | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Ofox | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| LowRouter | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| OpenCode | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| NEAR AI Cloud | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Eden AI | $0.10 | $0.50 | $0.01 | 1.05M | 128K | — | +100% |
| Standard Compute | $0.10 | $0.50 | $0.01 | 1.05M | 50K | — | +100% |
| Azureus | $0.11 | $0.55 | $0.011 | 1.05M | 128K | 100%24h | +120% |
| Azureeu | $0.11 | $0.55 | $0.011 | 1.05M | 128K | 100%24h | +120% |
| Amazon Bedrockus-east-1 | $0.11 | $0.55 | $0.011 | 1.05M | 128K | 100%24h | +120% |
| Cortecs | $0.12 | $0.60 | $0.012 | 1.05M | 128K | — | +140% |
| Requesty | $0.12 | $0.60 | $0.012 | 1.05M | 128K | — | +140% |
| AI/ML API | $0.13 | $0.65 | $0.013 | 1.05M | 128K | — | +160% |
| OpenAIfast | $0.20 | $1.00 | $0.02 | 1.05M | 128K | 100%24h | +300% |
Value
Price vs. performance
GPT-6 Luna Other OpenAI Other labs Value frontier · GPQA Diamond vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.
Benchmarks
19 benchmark scores
| Benchmark | Score | Rank | Leader |
|---|---|---|---|
| FrontierCodeSoftware engineering · Mergeable fixes for hard open-source issues | 42.4% | #22of 41 | Claude Opus 5.554.6% |
| SciCodeSoftware engineering · Research-coding problems from the natural sciences | 54.6% | #28of 102 | Claude Opus 5.566.9% |
| WeirdML v3Software engineering · Unfamiliar ML and data tasks with vague goals | 7.9% | #13of 22 | GPT-6 Astra42.2% |
| APEX-AgentsAgents & computer use · Long professional tasks in banking, consulting and law | 44.3% | #36of 51 | Gemini 4 Argon82.4% |
| GDP.pdfWriting & content · Answer questions about real professional PDFs | 23.0% | #18of 38 | GPT-6.1 Sol35.0% |
| SimpleQA VerifiedWriting & content · Factual accuracy on 1,000 short questions | 41.4% | #41of 79 | Gemini 4 Argon76.0% |
| WebDev ArenaDesign & visual · People vote on which model builds the better website (Elo) | 1582 | #24of 90 | Claude Opus 5.51820 |
| Blueprint-Bench 2Design & visual · Turn apartment photos into 2D floor plans | 31.2% | #15of 32 | Gemini 4 Argon54.4% |
| Furniture AssemblyDesign & visual · Spot mistakes in photos of IKEA builds | 44.2% | #12of 34 | Claude Opus 5.583.3% |
| GPQA DiamondReasoning & knowledge · PhD-level biology, chemistry and physics questions | 90.5% | #39of 122 | Gemini 4 Argon96.4% |
| ARC-AGI-2Reasoning & knowledge · Few-shot abstract reasoning on grid puzzles | 59.3% | #37of 75 | GPT-6 Astra95.0% |
| ARC-AGI-1Reasoning & knowledge · Pattern induction from input–output examples | 86.7% | #39of 75 | Gemini 4 Argon98.5% |
| CritPtReasoning & knowledge · Open-ended, research-level physics problems | 19.4% | #26of 111 | GPT-5.6 Sol32.3% |
| Chess PuzzlesReasoning & knowledge · Find the single best move in 100 new puzzles | 36.0% | #42of 83 | GPT-6 Astra76.0% |
| LMCAReasoning & knowledge · Judge the quality of conceptual arguments like experts | 44.5% | #41of 123 | Claude Sonnet 5.568.3% |
| FrontierMathMaths · Expert-written problems, undergrad to early research (tiers 1–3) | 79.0% | #17of 87 | GPT-6.1 Sol93.7% |
| FrontierMath Tier 4Maths · Exceptionally hard research-level problems | 56.1% | #16of 64 | GPT-6.1 Sol100.0% |
| ProofBenchMaths · Graduate maths proofs verified in Lean 4 | 64.0% | #18of 70 | Claude Sonnet 5.5100.0% |
| OTIS Mock AIMEMaths · Competition-style problems harder than MATH Level 5 | 98.9% | #16of 120 | Gemini 4 Argon100.0% |
Specs
Details
- Model ID
openai/gpt-6-luna- Developer
- OpenAI
- Release date
- Sep 22, 2026 ·
- Context window
- 1,050,000 tokens
- Max output
- 128,000 tokens
- API price
- $0.10 / $0.50 per 1M input / output tokens
- Providers
- 35
- Input types
- file, image, text
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- No
- Free tier
- No
Release date and prices from OpenRouter's catalog; providers from OpenRouter and models.dev. Buying directly from a provider can cost a little differently. Speed, latency and uptime are measured on OpenRouter only; uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.