GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, suited for high-volume chat, classification, and lightweight agent workflows.
Added Sep 22, 2026
Context Window
1.1M
Max Output
128.0K
Input Price (Auto)
$0.050/1M
Output Price (Auto)
$0.25/1M
Cache Read (Auto)
$0.0050/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
18.3
Agentic work
AutomationBench-AA
Workflow automation with guardrail penalties
9.1%
Better than 35% of models compared
AA-Briefcase
Agentic knowledge work (Elo)
892 Elo
Better than 42% of models compared
GDPval-AA v2
Economically valuable tasks (Elo)
1034 Elo
Better than 53% of models compared
Document reasoning
GDP.pdf
Professional PDF reasoning: all-pass rate
5.4%
Better than 27% of models compared
AA-LCR v1.1
Long context reasoning with updated grading
39.7%
Better than 37% of models compared
Reasoning
HLE
Humanity's Last Exam
8.6%
Better than 47% of models compared
Coding
Terminal-Bench v4.0
Practical coding and terminal tasks
1.5%
Better than 48% of models compared
SciCode
Python programming for scientific computing
43.1%
Better than 35% of models compared
Legacy benchmarks
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
39.7%
Better than 37% of models compared
Last updated Sep 22, 2026
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Compare GPT 6 Luna with similar models from the same provider or model family.
GPT 6 Luna Pro
openai/gpt-6-luna-proGPT-6 Luna Pro uses the same underlying model as GPT-6 Luna with Pro reasoning mode enabled for higher-quality responses on complex tasks.
GPT Luna Latest
openai/gpt-luna-latestCompatibility alias that routes to GPT 5.6 Luna, the latest supported GPT Luna model.
GPT 5.6 Luna
openai/gpt-5.6-lunaGPT-5.6 Luna is the fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume chat, classification, lightweight agentic workflows, and latency-sensitive reasoning tasks.
GPT 5.6 Luna Pro
openai/gpt-5.6-luna-proGPT-5.6 Luna with Pro reasoning mode. Pro mode performs more model work for difficult tasks; reasoning effort remains independently configurable and defaults to medium.
GPT 6 Sol
openai/gpt-6-solGPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier. It is suited for demanding professional work, reasoning, coding, and agentic workflows.
GPT 6 Sol Pro
openai/gpt-6-sol-proGPT-6 Sol Pro uses the same underlying model as GPT-6 Sol with Pro reasoning mode enabled for higher-quality responses on complex tasks.