BenchLeader

GPT-6 Luna

Reasoning effort
Quality#84 of 335
56.5Index
Top quarter
+6.5 on the median
Price#37 of 251
$0.200per 1M tokens
Cheapest quarter
0.2× the median
Speed#73 of 217
104tokens/s
Above the median
1.4× the median

No cheaper ranked model scores higher: it is on the price frontier.

As of 9 Nov 2026, GPT-6 Luna by OpenAI scores 56.5 on the BenchLeader Index (599 ranked configurations), with its best results in long context (66) and weakest in knowledge (45). API pricing: $0.100 per 1M input tokens and $0.500 per 1M output tokens ($0.200 blended at 3:1), list price on 9 Nov 2026. It streams about 100 tokens/s (Artificial Analysis). Released 22 Sep 2026.

Key facts (as of 9 Nov 2026)

  • GPT-6 Luna API pricing: $0.100 per 1M input tokens and $0.500 per 1M output tokens ($0.200 blended at 3:1) (list price, 9 Nov 2026).
  • GPT-6 Luna streams about 100 tokens/s (Artificial Analysis, 9 Nov 2026).
  • GPT-6 Luna was released on 22 Sep 2026 (OpenAI).

In detail. GPT-6 Luna is an OpenAI proprietary reasoning model, released 22 Sep 2026. Its best configuration (max reasoning effort) ranks #177 of 599 on the BenchLeader Index at 56.5 ±3.2, in the upper half. The ± is the point: 244 other configurations score within that range, so they and this one cannot be told apart on quality alone — price and speed are what separate them. It scores highest in long context (66) and lowest in knowledge (45). At $0.200 per million tokens blended it is among the cheapest fifth of ranked models. Output speed of 104 tokens per second puts it faster than most, with a first answer in 85.0 s. It has been measured at 8 reasoning-effort settings; this summary describes the best-scoring one, and the tabs above switch between them. Last measured 8 Nov 2026.

Blended price
$0.200/M
$0.100 in · $0.500 out
via Artificial Analysis
Output speed
104 tok/s
measured by Artificial Analysis
First answer
85 s
first token 2.39 s
Context
1.1M
via models.dev
Full answer
177 s
median, reasoning included
Cost per task
$0.152
12 min a task, AA Index
Tokens per task
75k
76% of it reasoning
Released
22 Sep 2026
How it scores by categoryDashed line = average model (50). One step of 15 = one standard deviation.
  1. Overall index57
  2. Reasoning56
  3. Coding58
  4. Agents & tools49
  5. Maths64
  6. Knowledge45
  7. Human preference62
  8. Multimodal58
  9. Long context66

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Versions

OpenAI has shipped 2 models under this name. Each is ranked on its own results; a newer version often has fewer results so far, which holds its index nearer the average until more arrive.

ModelReleasedIndexRank
GPT-6 Lunamaxthis page22 Sep 202656.5#177
GPT-5.6 Lunaxhigh9 Jul 202658.4#129

Reasoning-effort configurations

The same model behaves differently depending on how much it is allowed to think. Each row is one setting, scored only on the benchmarks that were run at that setting. “Not stated” collects results from publishers that did not say which setting they used; for a reasoning model that is usually its thinking mode, but we do not assume it. Pick a setting here or at the top of the page to see its price, speed and category scores.

EffortIndexRankSpeedFirst answerChat reply costCategories
no reasoning40.0#52583 tok/s1.19 s$0.0002Coding 34 · Knowledge 31 · Long context 44 · Multimodal 44 · Reasoning 33
low45.8#43490 tok/s2.48 s$0.0002Agents & tools 41 · Coding 37 · Knowledge 35 · Long context 62 · Multimodal 58 · Reasoning 36
medium49.7#35099 tok/s5.16 s$0.0002Agents & tools 48 · Coding 46 · Knowledge 37 · Long context 64 · Multimodal 60 · Reasoning 43
high51.2#31698 tok/s11 s$0.0002Coding 50 · Knowledge 38 · Long context 64 · Multimodal 60 · Reasoning 46
xhigh52.1#287102 tok/s22 s$0.0002Coding 50 · Knowledge 38 · Long context 65 · Multimodal 62 · Reasoning 49
maxbest56.5#177104 tok/s85 s$0.0002Agents & tools 49 · Coding 58 · Human preference 62 · Knowledge 45 · Long context 66 · Maths 64 · Multimodal 58 · Reasoning 56
pro mode––70 tok/s2.39 s$0.0002
not stated––70 tok/s2.39 s$0.0002Composite 46 · Knowledge 46 · Maths 61

What more thinking costs

Turning the effort up buys index points and multiplies the bill. Here max costs 30× low for +10.7 on the index — 2.2 points per doubling of spend. Compare that with other models.

424956low: $0.005 per task, index 45.845.8low $0.01medium: $0.042 per task, index 49.749.7medium $0.042no reasoning: $0.071 per task, index 40.040.0no reasoning $0.071high: $0.073 per task, index 51.251.2high $0.073xhigh: $0.104 per task, index 52.152.1xhigh $0.104max: $0.152 per task, index 56.556.5max $0.152Index

Each point is one reasoning setting: its cost per Artificial Analysis index task (log scale) and its BenchLeader Index.

How its index has moved

23 Sep 2026 to 9 Nov 2026
465563
  • max
  • xhigh
  • high
  • medium

The index is recomputed from scratch every day, so a line moves when a new benchmark result lands, when a publisher revises a score, or when the models it is normalised against change. Early movement usually means the score is still settling.

Benchmark results

See all LLM benchmarks. One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.

Reasoning

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
GPQA Diamond–––––90.5%#47–Epoch AI Benchmarking Hub
Arena Hard Prompts–––––1463#91–Arena (LMArena)
LiveBench 2.0 Reasoningnot in indexeffort not stated––––––81.8%#23LiveBench
LiveBench 1.0 Reasoningnot in index–––––81.8%#49–LiveBench
Humanity's Last Exam (AA)not in index8.6%#36620.3%#23028.3%#17933.0%#15334.3%#14038.5%#108–Artificial Analysis
HLE-Diamond (AA)6.3%#13110.2%#11315.1%#9415.6%#9118.9%#7822.2%#68–Artificial Analysis
ARC-AGI-18.8%#24437.7%#20461.0%#16670.3%#14973.0%#14486.7%#108–ARC Prize
ARC-AGI-20.0%#2504.6%#18918.1%#15431.4%#13741.9%#12459.3%#98–ARC Prize
ARC-AGI-30.0%#740.2%#650.3%#600.4%#560.5%#520.6%#50–ARC Prize
CritPtnot in index1.1%#2402.6%#20610.6%#12915.4%#9817.4%#8819.4%#75–Artificial Analysis
CritPt v2 hard subset (AA)5.0%#1069.5%#10027.5%#7831.0%#7137.0%#5942.5%#52–Artificial Analysis
MysteryMechanismnot in index–––––19.4%#26–Vals AI
Chess Puzzlesnot in index–––––36.0%#51–Epoch AI Benchmarking Hub
Mystery Game Puzzlesnot in index–––––7.0%#126–Epoch AI Benchmarking Hub
LMCAnot in index–––––44.5%#93–Epoch AI Benchmarking Hub
DTBenchnot in index–––––90.1%#82–Epoch AI Benchmarking Hub

Coding

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
SciCode43.1%#15646.9%#13950.9%#10950.4%#11351.7%#9754.6%#63–SciCode
FrontierCode–––––42.4%#22–Cognition
Arena Coding–––––1502#78–Arena (LMArena)
Arena WebDev–––––1577#41–Arena (LMArena)
LiveBench 2.0 Codingnot in indexeffort not stated––––––70.8%#18LiveBench
LiveBench 1.0 Codingnot in index–––––79.0%#26–LiveBench
SciCode (AA)not in index43.1%#17146.9%#15150.9%#11350.4%#11951.7%#10154.6%#69–Artificial Analysis
IOI–––––55.6%#22–Vals AI
Code Migrationnot in index–––––42.5%#28–Vals AI
Code Migration v1.1not in index–––––46.7%#19–Vals AI
ProgramBenchnot in index–––––0.5%#19–Vals AI
SWE-bench Multimodalnot in index–––––37.5%#20–Vals AI
Vibe Code Bench v1.1not in index–––––81.7%#28–Vals AI
MirrorCodenot in index–––––26.7%#10–Epoch AI Benchmarking Hub
ALE-Benchnot in index––––1576.9#24––Epoch AI Benchmarking Hub
Terminal-Bench 4.0 (AA)not in index1.5%#1470.0%#1792.5%#1384.5%#1308.1%#11812.6%#102–Artificial Analysis
Startrise Frontendnot in indexeffort not stated––––––69.3%#27Startrise
GameBench 2 Overallnot in indexacross settings––––––47.1#34DuelLab GameBench 2
GameBench 2 by reasoning settingnot in index43.5#106–41.9#115–55.8#63––DuelLab GameBench 2
Design Arena Websitenot in indexeffort not stated––––––1265#44Design Arena
FrontierCode 1.1 (AA)not in index13.8%#7714.1%#7531.8%#6332.0%#6233.2%#6041.9%#33–Artificial Analysis
FrontierCode 2.0 (AA)1.6%#1062.2%#10412.8%#8218.6%#6618.4%#6725.2%#49–Artificial Analysis

Agents & tools

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
Terminal-Bench–––––15.2%#78–Terminal-Bench
APEX-Agents–––––44.3%#44–Mercor
Arena Agent–-6.2#42-2#34––1.5#23–Arena (LMArena)
LiveBench Long Agenticnot in indexeffort not stated––––––24.7%#20LiveBench
LiveBench Browsernot in indexeffort not stated––––––70.3%#13LiveBench
LiveBench Agentic Codingnot in index–––––51.2%#41–LiveBench
Terminal-Bench 2.1 (Vals)–––––73.0%#23–Vals AI
GDPval-AA v2.1, normalised scorenot in index27.2%#9026.6%#9238.1%#6742.1%#5843.2%#5546.6%#46–Artificial Analysis
GDPval-AA v2.1not in index1052#941040#961270#701352#601373#561444#48–Artificial Analysis
Analyst Agent (AA)not in index–––––43.8%#21–Artificial Analysis
CyberBenchnot in index–––––76.3%#5–Vals AI
Finance Agent v2not in index–––––49.9%#46–Vals AI
Finance Agent v2.1not in index–––––56.8%#31–Vals AI
Harvey's Legal Agent Benchmark v1.1not in index–––––4.2%#31–Vals AI
Harvey's Legal Agent Benchmark v1not in index–––––2.9%#44–Vals AI
Legal Research Benchnot in index–––––30.3%#55–Vals AI
SREBenchnot in index–––––2.7%#24–Vals AI
Tax Agent Benchnot in index–––––19.9%#55–Vals AI
Terminal-Bench 4.0 (Vals)not in index–––––13.6%#42–Vals AI
Terminal-Bench Sciencenot in index–––––4.3%#27–Vals AI
Arena Searchnot in index–––––1211#12–Arena (LMArena)
AutomationBenchnot in index9.1%#18112.1%#17840.5%#12347.8%#10847.8%#11053.2%#88–Artificial Analysis
GDP.pdf (AA)not in index5.8%#1839.0%#16313.8%#12618.2%#9518.6%#9022.8%#59–Artificial Analysis
Harvey LAB-AA v1.1not in index–––––3.3%#17–Harvey
AA-Briefcase v1.1not in index903#122740#1311096#1001187#911235#851337#72–Artificial Analysis
GDPxnot in index–––––5.1%#12–GDPx by SemiAnalysis
Design Arena Agenticnot in indexeffort not stated––––––1149#49Design Arena
Terminal-Bench-Science 0.1 (AA)not in index0.9%#980.9%#981.4%#972.9%#915.2%#778.6%#66–Artificial Analysis
CWE-Bench (AA)–––––56.7%#10–Artificial Analysis
DeepSec-Bench (AA)–––––23.5%#11–Artificial Analysis
CyberGym end-to-end (AA)–––––77.9%#5–Artificial Analysis
FACTS Searchnot in indexeffort not stated––––––86.8%#9Google

Knowledge

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
SimpleQA Verified–––––41.4%#48–Epoch AI Benchmarking Hub
LiveBench 2.0 Data Analysisnot in indexeffort not stated––––––73.4%#20LiveBench
LiveBench Researchnot in indexeffort not stated––––––48.5%#31LiveBench
LiveBench 1.0 Data Analysisnot in index–––––73.4%#42–LiveBench
AA-Omniscience v1.1-25.8#122-18.1#117-13.6#110-12.8#108-13.0#109-8.3#96–Artificial Analysis
PRBench Legaleffort not stated––––––42.9%#28Scale AI SEAL
BioMysteryBenchnot in index–––––61.5%#27–Vals AI
ClaimBenchnot in index–––––99.2%#5–Vals AI
Excel Modeling Benchmarknot in index–––––68.5%#16–Vals AI
Excel Modeling Benchmark v1.1not in index–––––70.0%#18–Vals AI
MedCodenot in index–––––44.7%#41–Vals AI
MedScribenot in index–––––83.7%#43–Vals AI
Public Benefits Bench v1.1not in index–––––57.6%#38–Vals AI
GDP.pdfnot in index–––––23.0%#25–Epoch AI Benchmarking Hub
AA-Omniscience v1.1: accuracynot in index30.1%#9336.1%#7838.7%#6939.0%#6738.6%#7039.6%#63–Artificial Analysis
AA-Omniscience v1.1: non-hallucinationnot in index20.0%#10715.2%#11414.7%#11615.1%#11516.0%#11220.6%#106–Artificial Analysis
HealthBench Professional (AA)not in index–––––61.9%#10–OpenAI

Instruction following

BenchmarkmaxSourceTrend
LiveBench Languagenot in index73.8%#53LiveBench
LiveBench Instruction Followingnot in index55.9%#64LiveBench
Arena Instruction Followingnot in index1436#84Arena (LMArena)

Human preference

BenchmarkmaxSourceTrend
Arena Text1441#96Arena (LMArena)
Arena Creative Writingnot in index1407#98Arena (LMArena)
Arena Multi-turnnot in index1442#103Arena (LMArena)
Arena Longer Queriesnot in index1448#92Arena (LMArena)

Multimodal

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
Arena Vision–––––1211#86–Arena (LMArena)
LiveBench Designnot in indexeffort not stated––––––76.1%#13LiveBench
MMMU-Pro62.1%#21276.0%#10577.9%#9077.5%#9279.7%#6679.7%#68–Artificial Analysis
SAGEnot in index–––––83.4%#21–Vals AI
Blueprint-Bench 2not in indexeffort not stated––––––31.2%#17Epoch AI Benchmarking Hub
Code2Video-AAnot in index–––––1030#14–Artificial Analysis
AA-3Dnot in index–––––1000#12–Artificial Analysis

Long context

Benchmarkno reasoninglowmediumhighxhighmaxSourceTrend
AA-LCR v1.139.7%#38174.0%#18378.3%#12679.3%#11080.0%#8883.3%#22Artificial Analysis
MLCRnot in index15.0%#8118.9%#5818.3%#6219.4%#5420.6%#4626.1%#27Artificial Analysis

Composite

Benchmarkno reasoninglowmediumhighxhighmaxnot statedSourceTrend
Epoch Capabilities Indexnot in indexeffort not stated––––––156.7#32Epoch AI Benchmarking Hub
LiveBench 2.0effort not stated––––––60.4%#22LiveBench
LiveBench 1.0not in index–––––72.0%#51–LiveBench
AA Intelligence Index v5.0not in index9.4#1049.7#10318.4#9021.4#8423.4#7927.9#69–Artificial Analysis
AA Intelligence Index v4.3.2not in index18.5#26221.5#22029.9#13232.9#11534.6#9638.1#83–Artificial Analysis
AA Progress Index v1not in index244.6#277272.7#194299.8#120306.4#106310.3#95317.1#77–Artificial Analysis
Vals Indexnot in index–––––52.3#28–Vals AI
Vals Finance Indexnot in index–––––53.0%#30–Vals AI
Vals Science Indexnot in index–––––28.4%#21–Vals AI
Vals Router Indexnot in indexeffort not stated––––––52.3%#19Vals AI
AA Cyber Indexnot in index–––––52.7#5–Artificial Analysis

Safety & honesty

Benchmarknot statedSourceTrend
FORTRESSnot in index10.8%#73Scale AI SEAL

GameBench 2 Overall: 47.1. GameBench 2, best reasoning setting (XHigh): 55.8. Reference only, not part of the BenchLeader Index.

DuelLab GameBench 2, release gb2-20261103-eaea31df94e6 (https://benchmarks.duellab.org/releases/gb2-20261103-eaea31df94e6/), CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Scores mapped to BenchLeader model names; not endorsed by DuelLab.

Where it wins

Benchmarks where this configuration ranks in the top five of every configuration measured.

API pricing: where to run it

Every provider serving this model through OpenRouter, with throughput and first-token latency measured on live traffic over the last 30 minutes and each provider’s own price. Purple marks the best in each column.

ProviderSpeedFirst tokenInput $/MOutput $/MContextQuantisation
Amazon Bedrock129 tok/s1.18 s$0.100$0.5001.1M–
OpenAI98 tok/s0.89 s$0.200$1.001.1M–
Amazon Bedrock85 tok/s1.21 s$0.110$0.5501.1M–
Azure77 tok/s2.63 s$0.110$0.5501.1M–
Azure75 tok/s1.10 s$0.110$0.5501.1M–
Azure74 tok/s3.15 s$0.100$0.5001.1M–
OpenAI71 tok/s2.58 s$0.100$0.5001.1M–
OpenAI54 tok/s2.62 s$0.050$0.2501.1M–

What a task costs

Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache at $0.010 per 1M. Reasoning tokens are not modelled.

WorkloadTokens in / outCostWith cachingTime
Chat reply400 / 300$0.0002$0.00021.5 min
Summarize a 30-page report12,000 / 600$0.0015$0.00071.5 min
Code edit6,000 / 1,500$0.0014$0.00091.7 min
Agentic coding session60,000 / 4,000$0.0080$0.00402.1 min
Structured extraction2,000 / 200$0.0003$0.00021.4 min

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Show where GPT-6 Luna ranks on a model card or README. The badge redraws itself with every daily update, carries the data date and links back to this page. To see ranks like this on OpenRouter and Hugging Face model pages, get the Chrome extension.

[![GPT-6 Luna on BenchLeader: #83 overall](https://www.benchleader.com/badge/gpt-6-luna.svg)](https://www.benchleader.com/models/gpt-6-luna)

Cite this

The ranking changes daily, so a reference carries the data date. APA style:

BenchLeader. (2026, November 9). GPT-6 Luna on the BenchLeader Index (method v1.4) [Data set]. Retrieved November 9, 2026, from https://www.benchleader.com/models/gpt-6-luna

BibTeX:

@misc{benchleader_gpt_6_luna_20261109,
  author       = {{BenchLeader}},
  title        = {{GPT-6 Luna on the BenchLeader Index (method v1.4)}},
  year         = {2026},
  month        = nov,
  howpublished = {\url{https://www.benchleader.com/models/gpt-6-luna}},
  note         = {Data as of 2026-11-09}
}

Every badge style, the embeddable top-10 widget and how to cite the Index

Questions people ask

What are GPT-6 Luna's benchmark scores?
As of 9 Nov 2026, GPT-6 Luna (max effort) scores 56.5 ±3.2 on the BenchLeader Index, strongest in long context (66) and weakest in knowledge (45). That rests on independent benchmark results only, and every score on this page links to its publisher.
How does GPT-6 Luna rank?
GPT-6 Luna (max effort) is #177 of 599 ranked configurations on 9 Nov 2026. 244 other configurations score within its margin, so the exact position matters less than the band. The leader is Claude Fable 5.2 (max effort) at 69.4.
How much does GPT-6 Luna cost per 1M tokens?
As of 9 Nov 2026, GPT-6 Luna costs $0.100 per 1M input tokens and $0.500 per 1M output tokens, $0.200 blended (three input tokens per output token).
Is GPT-6 Luna better than GPT-5.5?
As of 9 Nov 2026, GPT-5.5 (xhigh) leads on quality (64.3 vs 56.5 on the BenchLeader Index), but GPT-6 Luna (max) costs 56× less, so it is the better buy unless you need the extra quality. The head-to-head page has the benchmark-by-benchmark detail.
When was GPT-6 Luna released?
OpenAI released GPT-6 Luna on 22 Sep 2026. BenchLeader has results for it at 8 reasoning-effort settings.

Data as of 9 Nov 2026. Compare these configurations.

Cite as: BenchLeader, “GPT-6 Luna: benchmarks, pricing, speed and rank”, data as of 9 Nov 2026, https://www.benchleader.com/models/gpt-6-luna.