Models/GPT-5.6 Luna (max)

MDL

GPT-5.6 Luna (max)

OpenAI

Verified against Artificial Analysis · Jul 13, 2026

Capability

percentile index

Price /M

$1 / $6

in / out

Context

—

Avg score

63.7

4 benchmarks

AA Intelligence

51.2

index

Speed

234 tok/s

TTFT 1m 5s

Released

Jul 9, 2026

About

GPT-5.6 Luna (max) is a proprietary model in the GPT family from OpenAI. Benchmarked on 4 evals, averaging 63.7.

Benchmark scores · 4

avg 63.7 — higher is better

GPQA Diamondartificial-analysis · 2026-07

91.1

AA Long-Context Reasoningartificial-analysis · 2026-07

SciCodeartificial-analysis · 2026-07

52.5

Humanity's Last Examartificial-analysis · 2026-07

37.2

Details

PublisherOpenAI

FamilyGPT

Parameters—

License—

WeightsClosed

ReleasedJul 9, 2026

Performance & price

Output speed234 tok/s

Latency (TTFT)1m 5s

Price in / out$1 / $6 per 1M

Blended price$2.25 / 1M

Coding index71.4

Median across API providers, via Artificial Analysis. Blended = 3:1 input:output. For reasoning models, latency includes thinking time. Methodology →

History

full ledger →

AA Long-Context Reasoningfirst seen at 74

4d ago

SciCodefirst seen at 52.5

4d ago

Humanity's Last Examfirst seen at 37.2

4d ago

GPQA Diamondfirst seen at 91.1

4d ago

Append-only ledger — every observed change to this model's numbers.

API providers

Artificial Analysis$6/M