Effort: max · Max
openaiReleased Sep 22, 2026
OpenAI: GPT-6 Luna
Can turn reasoning off for high-volume requests; Chat Completions tool calls require reasoning_effort=none.
Source description
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol. It is suited for high-volume and latency-sensitive workloads such as chat, classification, and lightweight agentic...
Context window1.1M
Max output128K
Provider endpoints9
Benchmark results19
Agent runs1
Measured performance
All leaderboards ↗Benchmark results
Effort: max · Max
GDPval-AA ↗2.1
1,431.86Effort: max · Max
AutomationBench-AA ↗AA Index 4.3.2 collection
53.17%Effort: max · Max
Effort: max · Max · Harness unreported
SciCode ↗AA Index 4.3.2 collection
54.63%AA · Under reviewEffort: max · Max
Humanity’s Last Exam ↗AA Index 4.3.2 collection
38.51%Effort: max · Max
GDP.pdf ↗AA Index 4.3.2 collection
22.8%Effort: max · Max
CritPt ↗AA Index 4.3.2 collection
19.43%AA · Under reviewEffort: max · Max
AA-Omniscience ↗AA Index 4.3.2 collection
0.65Effort: max · Max
AA-LCR ↗1.1
83.33%Effort: max · Max
LiveBench Overall ↗2.0 · 2026-10-14 (dataset 2026-09-02)
69.4%Effort: max · single run · equal mean of 7 suites
LiveBench Design ↗2.0 · 2026-10-14 (dataset 2026-09-02)
82.5%Effort: max · single run
LiveBench Research ↗2.0 · 2026-10-14 (dataset 2026-09-02)
43.5%Effort: max · single run
LiveBench Browser Use ↗2.0 · 2026-10-14 (dataset 2026-09-02)
72%Effort: max · single run
LiveBench Coding ↗2.0 · 2026-10-14 (dataset 2026-09-02)
84.5%Effort: max · single run
LiveBench Agentic ↗2.0 · 2026-10-14 (dataset 2026-09-02)
48.1%Effort: max · single run
LiveBench Data Analysis ↗2.0 · 2026-10-14 (dataset 2026-09-02)
73.4%Effort: max · single run
LiveBench Reasoning ↗2.0 · 2026-10-14 (dataset 2026-09-02)
81.8%Effort: max · single run
Provider measurements
1 configurationSpeed
≈10K input tokens1 requestmedian / 72h
Artificial Analysis · first-party providers · serving endpoint not reported
OpenAI
GPT-6 Luna (Max)
Reasoning max
- Output rate
- 126.21 tok/s
- Time to first chunk
- 86.6428 s
Last checked Source ↗
Methodology 2.2.0 & measurement details
First chunk includes request processing and network time, and may include reasoning.
- Prompt
- long · ≈10,000 input tokens
- Parallel requests
- 1
- Minimum answer
- 1,500 tokens
- Aggregation
- median over 72 hours
- Token counting
- o200k_base
- Benchmark client
- Google Cloud us-central1-a
- Serving endpoint
- Not reported
- Serving region
- Not reported
- Sample size
- Not reported
- Window end
- Not reported
Model + harness
All agent results ↗Agent runs
Terminal-Bench 4.0
codex0.159.0
Reasoning effort max
Tested model identity
GPT-6 Lunaopenai/gpt-6-lunaPass rate16.36%
95% CI 13.64%–19.08%
n = 330Checked
Access & cost
17 quotesPrices across providers
Your token mix
USD · listed token ratesOpenRouter
Catalog quote- Input
- $0.10
- Output
- $0.50
- Cached input
- $0.01
Experiential
Standard · fewer than 272,001 input tokens
- Input
- $0.10
- Output
- $0.50
- Cached input
- $0.01
Catalog list rate. Plan allowances and temporary discounts are separate.
Experiential
At least 272,001 input tokens
- Input
- $0.20
- Output
- $0.75
- Cached input
- $0.02
Catalog list rate. Plan allowances and temporary discounts are separate.
- Input
- $0.05
- Output
- $0.25
- Cached input
- $0.005
Max prompt 922000 tokens · Cache write $0.0625/M tokens · Web search $0.01/search
OpenAI
via OpenRouteropenai/flex · tier=flex · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $0.10
- Output
- $0.375
- Cached input
- $0.01
Max prompt 922000 tokens · Cache write $0.125/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.10
- Output
- $0.50
- Cached input
- $0.01
Max prompt 922000 tokens · Cache write $0.125/M tokens · Web search $0.01/search
- Input
- $0.20
- Output
- $0.75
- Cached input
- $0.02
Max prompt 922000 tokens · Cache write $0.25/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.10
- Output
- $0.50
- Cached input
- $0.01
Max prompt 922000 tokens · Cache write $0.125/M tokens · Web search $0.01/search
- Input
- $0.20
- Output
- $0.75
- Cached input
- $0.02
Max prompt 922000 tokens · Cache write $0.25/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.11
- Output
- $0.55
- Cached input
- $0.011
Cache write $0.1375/M tokens · Web search $0.01/search
- Input
- $0.22
- Output
- $0.825
- Cached input
- $0.022
Cache write $0.275/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.11
- Output
- $0.55
- Cached input
- $0.011
Cache write $0.1375/M tokens · Web search $0.01/search
- Input
- $0.22
- Output
- $0.825
- Cached input
- $0.022
Cache write $0.275/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.11
- Output
- $0.55
- Cached input
- $0.011
Max prompt 922000 tokens · Cache write $0.1375/M tokens · Web search $0.01/search
Amazon Bedrock
via OpenRouteramazon-bedrock/us-east-1 · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $0.22
- Output
- $0.825
- Cached input
- $0.022
Max prompt 922000 tokens · Cache write $0.275/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
- Input
- $0.20
- Output
- $1.00
- Cached input
- $0.02
Max prompt 922000 tokens · Cache write $0.25/M tokens · Web search $0.01/search
OpenAI
via OpenRouteropenai/fast · tier=priority · prompt over 272000 tokens · rate option 1
Conditional rate- Input
- $0.40
- Output
- $1.50
- Cached input
- $0.04
Max prompt 922000 tokens · Cache write $0.5/M tokens · Web search $0.01/search · A rate applies when all its listed conditions match. Dates and times use UTC.
Offers for this model
1 offerExperiential Labs · Discount
100% off · Experiential Pro model discounts
Paid Pro plan required, covering the first 2,000 credits of usage each month, then list price.
Checked Source ↗
Model specifications
- Developer
- openai
- Modality
- Language
- Context
- 1,050,000 tokens
- Maximum output
- 128,000 tokens
- Weights
- Not reported
- Released
- Sep 22, 2026
- Provider listed
- Sep 22, 2026
- First discovered
- Oct 16, 2026
Exact identities
- openrouter
openai/gpt-6-luna - experiential
gpt-6-luna - artificial-analysis
6fb13851-40ce-4bda-ad3f-6b38e0c5daa7 - livebench
gpt-6-luna
Sources
Updated Oct 19, 2026
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