BenchLeader

GPT-6 Luna vs GPT-6 Sol

Verdict
  • GPT-6 Sol (max) leads on quality: 67.7 vs 61.2.
  • GPT-6 Sol (max) is stronger in composite, knowledge, long context, multimodal, reasoning.
  • GPT-6 Luna (max) is 20× cheaper ($0.200 vs $4.00 per 1M blended).
MetricGPT-6 Luna (max)GPT-6 Sol (max)
BenchLeader Index61.267.7
Composite score73.986.2
Knowledge score63.275.4
Long context score67.567.7
Multimodal score59.267.1
Reasoning score76.195.0
Blended price $/M$0.200$4.00
Output speed157 tok/s126 tok/s
Time to first answer142.6 s107.2 s
Context window1.1M1.1M
AA Intelligence Index37.347.5
AA-LCR83.3%83.7%
MMMU-Pro75.5%83.3%
AA-Omniscience0.727.1
Humanity's Last Exam (AA)38.5%47.9%
SciCode (AA)54.6%57.6%
CritPt19.4%30.9%
GDPval (AA)43.4%49.4%
Terminal-Bench 4.0 (AA)12.6%43.9%
AutomationBench53.2%61.6%
GDP.pdf20.4%24.8%
MLCR16.1%16.1%
AA-Omniscience: accuracy43.8%54.5%
AA-Omniscience: non-hallucination23.3%39.9%
AA-Briefcase12991483

Data as of 2026-09-23. Best configuration of each model; every score links to its source on the model pages.

GPT-6 Luna vs GPT-6 Sol: questions

Is GPT-6 Luna better than GPT-6 Sol?
GPT-6 Sol (max) leads on quality: 67.7 vs 61.2. The BenchLeader Index combines every independent quality benchmark; GPT-6 Sol (max) is ahead overall as of 2026-09-23, but check the category scores for your use.
Which is cheaper, GPT-6 Luna or GPT-6 Sol?
GPT-6 Luna is cheaper: $0.200 against $4.00 per million tokens, blended at three input tokens per output token.
Which is faster, GPT-6 Luna or GPT-6 Sol?
GPT-6 Luna streams faster: 157 against 126 output tokens per second.
Which has the larger context window?
Both accept 1.1M tokens of context.