List price
Input / 1M$0.20Output / 1M$1.20Cache read / 1M$0.020Blended$0.950Value index86.7Last move-80.0% from 2026-07-31
models.dev · MIT · retrieved Oct 24, 2026
OpenAI
GPT-5.6 Luna
GPT-5.6 Luna is listed by OpenAI at $0.2 input and $1.2 output per million tokens. The recorded context window is 1,050,000 tokens. Release date on file: 2026-07-09. LMArena's text board published 2026-10-20 gives it an overall rating of 1430.5 (rank 94, 41,052 votes). Price source: models.dev (MIT).
- Context100
- Inverse price100
- Arena75
- GPQA94
- Tools100
- Modalities67
Price history
Input and output list price. A missing day stays a gap in the line. The series is not a quality history.
Benchmarks
LMArena is CC-BY-4.0. Epoch scores, including LiveBench where Epoch publishes it, are CC-BY-4.0. A blank cell means this snapshot has no match. Nothing here is estimated.
| Benchmark | Score | Detail | Source |
|---|---|---|---|
| LMArena overall | 1430.5 | rank 94 · 41,052 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena coding | 1466.4 | rank 75 · 11,119 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| LMArena math | 1459.3 | rank 59 · 1,926 votes | LMArena leaderboard dataset · CC-BY-4.0 |
| GPQA Diamond | 91.6% | — | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
| LiveBench | — | — | — |
| SWE-bench Verified | — | — | — |
| Epoch Capability Index | 156.50 | 154.19–159.26 | Epoch AI Capabilities & benchmarking · CC-BY-4.0 |
Provider prices
The list row is the price used for the value index. Other rows are the same model id on models.dev, plus the LiteLLM catalog price when we have one. A split quote is kept beside the list price.
| Quote | Provider | Input / 1M | Output / 1M | Blended | Source |
|---|---|---|---|---|---|
| List | OpenAI | $0.20 | $1.20 | $0.950 | models.dev · MIT |
| Also listed | Standard Compute | $0.20 | $1.20 | $0.950 | models.dev · MIT |
| Also listed | Merge Gateway | $0.20 | $1.20 | $0.950 | models.dev · MIT |
| Also listed | Impossibl | $0.20 | $1.20 | $0.950 | models.dev · MIT |
| LiteLLM | openai | $0.20 | $1.20 | $0.950 | LiteLLM model_prices_and_context_window.json · MIT |
Spec
Context1,050,000Max output128,000Inputtext, image, pdfOutputtextReleased2026-07-09Open weightsNo
Spec fields are from the models.dev row for OpenAI.