G
GPT-6 Luna
OpenAI's budget tier, with a LiveBench design score of 82.5 that beats Astra
Intelligence v5
— v4.3.2 —
Leaderboard rank
—
Input / output
$0.10/$0.50
Blended 3:1
$0.20
Output speed
130 tok/s
Value
—
Capability profile Normalised to the field maximum
Specifications
Vendor
OpenAI
Released
2026-07
Weights
Closed, API only
Context
1,050,000 tokens
Max output
128,000 tokens
Parameters
Undisclosed
Input price
$0.10 / 1M
Output price
$0.50 / 1M
Cache hit
$0.01 / 1M
Output speed
130 tok/s
Intelligence
not indexed
Benchmark scores
How it is measured →Bars are scaled to the field maximum for that benchmark.
| Benchmarks | Score | Vs. best in field | Gap |
|---|---|---|---|
| AA Intelligence Index v5 | — | — | not indexed |
| AA Intelligence Index v4.3.2 | — | — | not indexed |
| GPQA Diamond | — | — | not indexed |
| Terminal-Bench 4.0 | — | — | not indexed |
| LiveBench Design Document generation (DOCX/PPT/PDF) | 82.5 | 95% | −4.4 pts |
| Vals Index | — | — | not indexed |
Assessment
After an 80% price cut on 30 July it became OpenAI's cheapest text model. Its LiveBench design score of 82.5 even edges Astra's 82.0 — small models have caught up with flagships at structured document generation.
At the same price
The four models closest on blended price, side by side.
| Model | v5 | Blended | tok/s | Score gap |
|---|---|---|---|---|
| Claude Haiku 5.5Anthropic | 36.2 | $0.20 | 235 | — |
| MiniMax M3.1 FlashMiniMax | 29.0 | $0.26 | 118 | — |
| DeepSeek V4.1 Flash Open weightsDeepSeek | 32.5 | $0.53 | 148 | — |
| MiMo-V2.6 Pro Open weightsXiaomi | 30.0 | $0.61 | 81 | — |
Compare side by side
Line it up against other models on price, speed and every benchmark.
The comparison tool lines up to 4 models side by side with switchable normalisation — built for purchasing decisions.
Open the comparison tool → Back to leaderboard