GPT-5.6 Luna
- In Input modalities: TextImage Out Output modalities: Text
- Reasoning· none, low, medium, high, xhigh, max
- Reasoning can be off
- Tool use
- Structured output
Prices
3 offerings · prices as listed OpenAI API (opens in a new tab)
gpt-5.6-luna| Conditions/ 1M tokens | Input | Cache read | Cache write | Output | |
|---|---|---|---|---|---|
| 30-minute cache | 12-hour cache | ||||
| Standard | $0.20 | $0.020 | $0.25 | $0.50 | $1.20 |
| Prompts over 272K tokens | $0.40 | $0.040 | $0.50 | $1.00 | $1.80 |
| Flex tier | $0.10 | $0.010 | $0.125 | $0.25 | $0.60 |
| Fast tier | $0.40 | $0.040 | $0.50 | $1.00 | $2.40 |
| Batch | $0.10 | $0.010 | $0.125 | $0.25 | $0.60 |
| Prompts over 272K tokensFlex tier | $0.20 | $0.020 | $0.25 | $0.50 | $0.90 |
| Prompts over 272K tokensFast tier | $0.80 | $0.080 | $1.00 | $2.00 | $3.60 |
| Prompts over 272K tokensBatch | $0.20 | $0.020 | $0.25 | $0.50 | $0.90 |
Prices from OpenAI API pricing (opens in a new tab) (checked Nov 9, 2026)
Standard: the price a request with no conditions pays (the headline price elsewhere on the site).
Details
- Max input
- 922K
- Knowledge cutoff
- Feb 2026
- Open weights
- —
- Family
- gpt-luna
- Model ID
Not stated on OpenAI’s pages: max thinking budget, aliases.
Cited scores
From third-party leaderboards, not measured by us- Epoch Capabilities Index 156.8
#30 of 118 listed models · CI 154.9–158.8
- LMArena Text 1,453
#51 of 163 listed models · xhigh effort · CI 1,449–1,458 · 40,661 votes
- Epoch AI · Chess Puzzles 43%
#30 of 85 listed models · max effort · ±4.98
Also listed: low effort 17% · reasoning off 3%
- Epoch AI · FrontierMath Tier 4 v2 61%
#16 of 65 listed models · max effort · ±7.71
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Oct 28 – Nov 5, 2026
- LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Nov 8, 2026
- EQ-Bench by Samuel J. Paech (eqbench.com; EQ-bench/EQ-bench-site on GitHub), MIT License. · License · as of Oct 24 – 28, 2026
- LiveBench (White et al.), release 2026-06-25, livebench.ai, licensed CC BY-SA 4.0. This board, adapted from it, is shared under CC BY-SA 4.0. · License · as of Jun 25, 2026
- Terminal-Bench 4.0 leaderboard (Marten, Shaw et al., Terminal-Bench; harbor-framework/terminal-bench on GitHub), licensed Apache-2.0. · License · as of Sep 29, 2026
- changes we made
Provider-reported scores
Published by OpenAI, under the conditions it states| Benchmark | Setting | Score |
|---|---|---|
| SWE-bench Pro | — | 62.7% |
| DeepSWE 1.1 | — | 67.2% |
| Terminal-Bench 2.1 | single agent | 84.7% |
| OSWorld 2.0 | set and scoring not stated | 45.6% |
| BrowseComp | single agent | 83.3% |
| GPQA Diamond | — | 92.3% |
| MMMU-Pro | no tools | 78.4% |
| with tools | 79.5% | |
| MRCR v2 | 8-needle, 256K–512K | 41.3% |
| 8-needle, 512K–1M | 41.3% |
Included in coding plans
- GitHub Copilot Pro $10.00 / month1,500 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.15 USD of usage per month
- GitHub Copilot Pro+ $39.00 / month7,000 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.70 USD of usage per month
- GitHub Copilot Max $100.00 / month20,000 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.
- GitHub Copilot Business $19.00 / month1,900 credits per month
- GitHub Copilot Enterprise $39.00 / month3,900 credits per month
- Kiro Pro $20.00 / month1,000 credits per month
- Kiro Pro+ $40.00 / month2,000 credits per month
- Kiro Pro Max $100.00 / month5,000 credits per month
- Kiro Power $200.00 / month10,000 credits per month
Changes
All changes →- 4 prices dropped on OpenAI API Input (Prompts over 272K tokens, Fast tier) $0.80 · Cache read (Prompts over 272K tokens, Fast tier) $0.080 · Cache write (Prompts over 272K tokens, Fast tier) $1.00 · Output (Prompts over 272K tokens, Fast tier) $3.60
Sources
- GPT-5.6: Frontier intelligence that scales with your ambition (opens in a new tab) openai.com · checked Sep 26, 2026
- Azure OpenAI pricing (opens in a new tab) azure.microsoft.com · checked Nov 8, 2026
- OpenAI API pricing (opens in a new tab) developers.openai.com · checked Nov 9, 2026
- GPT-5.6 Luna (opens in a new tab) developers.openai.com · checked Nov 8, 2026
- Changelog (opens in a new tab) developers.openai.com · checked Nov 9, 2026
- Azure AI Foundry: model retirement schedule (opens in a new tab) learn.microsoft.com · checked Nov 10, 2026
- GPT-5.6 Luna (opens in a new tab) developers.openai.com · checked Nov 5, 2026
OpenAI’s official policies: data use, privacy, terms →
OpenAI · United States · openai.com
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