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AI model rankingsLanguageGPT-6 Luna

GPT-6 Luna

OpenAIMedium Released September 2026

Visit OpenAI Full benchmarks
#70 smartest of 89 #3 cheapest Updated Oct 30, 2026, 04:30 PM UTC

At a glance

How GPT-6 Luna compares with the other 88 ranked language models.

  • Better for simple tasks. Ranked #70 of 89 on the overall intelligence score, ahead of 22% of models.

  • Answers right away. You wait about 0.00 sec before the answer starts.

  • Cheap to use. $0.20 per million tokens, cheaper than 98% of models.

Model details

Made by
OpenAI
Model family
GPT-6 Luna
Version
Medium
Released
September 2026 · 6 weeks ago
Input price
$0.10 / 1M tokens
Output price
$0.50 / 1M tokens
Value for money
#12 of 84
Tests with scores
4 of 8

Good for

  • Large volumes on a budgetOnly $0.20 per million tokens

Not ideal for

  • Long answers in real timeSlower than 90% of models
  • Complex reasoningScores in the bottom quarter overall
  • Autonomous agentsWeak on multi-step computer tasks

Intelligence

18

overall score

#70 of 89typical 30

Coding

–

coding score

typical –

Speed

0

tokens per second

#80 of 89typical 91

Wait

0.00 sec

before it replies

typical 15s

Price

$0.20

per 1M tokens

#3 of 84typical $2.00

Test results

Scores on individual tests that make up the intelligence score. The faint line marks the best score of any model.

  • Humanity's Last Exam

    Very hard expert questions across many subjects

    28%#70 of 86typical 42%
  • SciCode

    Writing code to solve science research problems

    51%#58 of 86typical 53%
  • Long documents

    Finding and reasoning over facts in very long texts

    78%#59 of 87typical 80%
  • Terminal-Bench

    Doing real tasks on a computer by itself, like an agent

    3%#72 of 89typical 31%

Where it ranks on intelligence

This model next to the models closest to it. Click another bar to open that model.

What would it cost?

Through the API, at the listed price. Chat apps usually charge a monthly plan instead.

  • 1,000 chat replies

    a question and a ~350-word answer, 1,000 times

    $0.35
  • Summarise a 100-page report

    about 50,000 words in, a one-page summary out

    $0.007
  • Write a 2,000-word article

    a short brief in, a long article out

    $0.001

Input, per 1M tokens

$0.10

Output, per 1M tokens

$0.50

How long do answers take?

Median times measured through the API.

Before the answer starts0.00 sec
Writing speed–
A full 500-word answer–

1 token is about ¾ of a word. Speeds change with server load, so treat these as typical, not guaranteed.

Versions of GPT-6 Luna

Higher effort settings think longer: smarter, but slower and pricier.

  • GPT-6 Luna

    OpenAIMax

    28

    intelligence

    $0.20

    per 1M

    114

    tokens/s

  • GPT-6 Luna

    OpenAIXhigh

    23

    intelligence

    $0.20

    per 1M

    116

    tokens/s

  • GPT-6 Luna

    OpenAIHigh

    21

    intelligence

    $0.20

    per 1M

    114

    tokens/s

  • GPT-6 Luna

    OpenAIMedium

    18

    intelligence

    $0.20

    per 1M

    0

    tokens/s

  • GPT-6 Luna

    OpenAILow

    10

    intelligence

    $0.20

    per 1M

    113

    tokens/s

  • GPT-6 Luna

    OpenAINon-reasoning

    9

    intelligence

    $0.20

    per 1M

    109

    tokens/s

Similar models

Other companies' models with the closest intelligence score.

  • MiniMax-M3

    MiniMax

    19

    intelligence

    $0.53

    per 1M

    104

    tokens/s

  • K2 Horizon 375B A23B

    Institute of Foundation Models

    18

    intelligence

    –

    per 1M

    700

    tokens/s

  • Beam 1.0

    Reflection

    18

    intelligence

    $0.60

    per 1M

    311

    tokens/s

  • Kimi K3

    KimiLow

    17

    intelligence

    $6.00

    per 1M

    0

    tokens/s

  • Qwen3.8 27B

    AlibabaXhigh

    20

    intelligence

    $1.13

    per 1M

    39

    tokens/s

More from OpenAI

  • GPT-6 Astra

    OpenAIMax

    57

    intelligence

    $20.0

    per 1M

    83

    tokens/s

  • GPT-6.1 Sol

    OpenAIMax

    55

    intelligence

    $4.00

    per 1M

    80

    tokens/s

  • GPT-6.1 Terra

    OpenAIMax

    51

    intelligence

    $2.00

    per 1M

    91

    tokens/s

Questions people ask

Is GPT-6 Luna a good AI model?
On the overall intelligence score it ranks #70 of 89 (score 18; the typical model scores 30). It stands out for large volumes on a budget.
How much does GPT-6 Luna cost?
Through the API it costs $0.10 per million input tokens and $0.50 per million output tokens. In everyday terms, 1,000 chat replies cost about $0.35. Chat apps that use it usually charge a monthly plan instead.
How fast is GPT-6 Luna?
It writes about – words per second, and you wait about 0.00 sec before the answer starts. A full 500-word answer takes roughly –.
What's the difference between the GPT-6 Luna versions?
There are 6 settings: Max (score 28), Xhigh (score 23), High (score 21), Medium (score 18), Low (score 10), Non-reasoning (score 9). Higher settings think for longer, which makes answers smarter but slower and more expensive.
What are good alternatives to GPT-6 Luna?
Models with a similar score include MiniMax-M3 by MiniMax, K2 Horizon 375B A23B by Institute of Foundation Models, Beam 1.0 by Reflection.

Benchmark data from Artificial Analysis, an independent benchmarking company. Rankings refresh every few hours.