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GPT-6 Luna is the fast, low-cost tier of OpenAI's GPT-6 series (1.05M-token context, text, image, and file input, $0.10/$0.50 per million input/output tokens), released September 22, 2026 below GPT-6 Sol and the flagship GPT-6 Astra. It is built for high-volume tasks with a clear goal, such as summarization, extraction, classification, quick questions, and lightweight agentic steps.
Image understanding#68Mathematical#69Software & IT Services#78Writing, Literature, & Language#92
AuthorOpenAI
Country🇺🇸 United States
ReleasedSep 22, 2026
Overview
Cost rate
0.1x
Context
1.1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.10
Cached input$0.01
Output$0.50
Context
Context length1,050,000
Max output tokens128,000
Knowledge cutoff-
Performance
Throughput114 tok/s
Latency10.01s
Qwen3.8 27B is an open-weight dense vision-language model from Qwen.
Image understanding#64Mathematical#78Software & IT Services#88Life, Physical, & Social Science#88
AuthorQwen
Country🇨🇳 China
ReleasedAug 14, 2026
Overview
Cost rate
0.4x
Context
262K
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.16
Cached input$0.04
Output$2.00
Context
Context length262,144
Max output tokens235,929
Knowledge cutoff-
Performance
Throughput-
Latency-
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
59.1
Claude Opus 5.5 (Max, Default Fallback)
Claude Opus 5.5 (Max, Default Fallback)56.9
GPT-6 Astra (Max)
GPT-6 Astra (Max)54.6GPT-6.1 Sol (Max)
GPT-6.1 Sol (Max)54.5Claude Sonnet 5.5 (Max, Default Fallback)
Claude Sonnet 5.5 (Max, Default Fallback)23.5GPT-6 Luna
GPT-6 Luna10.0
Qwen3.8 27B (batch)
Qwen3.8 27B (batch)Coding
80.7Claude Fable 5.1
Claude Fable 5.178.3GPT-5.6 Sol
GPT-5.6 Sol78.0Claude Opus 5
Claude Opus 576.9GPT-6 Astra
GPT-6 Astra76.7GPT-5.6 Terra
GPT-5.6 Terra68.1Qwen3.8 27B (batch)
Qwen3.8 27B (batch)GPT-6 Luna has no data
Automation & Tool Use
57.2Claude Fable 5.1
Claude Fable 5.156.5Claude Opus 5
Claude Opus 556.0Qwen3.8 Max (0902)
Qwen3.8 Max (0902)55.5
Muse Spark 1.3
Muse Spark 1.353.1
GLM 5.3
GLM 5.345.8Qwen3.8 27B (batch)
Qwen3.8 27B (batch)GPT-6 Luna has no data
Intelligence, coding & agentic scores from Artificial Analysis.
Software & IT Services
arena.ai1549
Gemini 4 Argon (High)
Gemini 4 Argon (High)1542Muse Wonder (Max)
Muse Wonder (Max)1540Claude Opus 4.7 (High)
Claude Opus 4.7 (High)1538Claude Fable 5 (High)
Claude Fable 5 (High)1537Claude Opus 4.6 (High)
Claude Opus 4.6 (High)1535Claude Opus 5.5 (High)
Claude Opus 5.5 (High)1534Muse Spark 1.2 (xHigh)
Muse Spark 1.2 (xHigh)1532GPT-6.1 Sol (Max)
GPT-6.1 Sol (Max)1488GPT-6 Luna
GPT-6 Luna1484Qwen3.8 27B (batch)
Qwen3.8 27B (batch)Popular comparisons
- Gemini 3.8 Flash vs Claude Haiku 5.5
DeepSeek V4 Pro 0813 vs GPT-6.1 Sol- GLM 5.3 vs DeepSeek V4 Pro 0813
Ling 3.1 Flash vs DeepSeek V4.1 Flash- DeepSeek V4 Pro 0813 vs Claude Opus 5.5
Qwen3.8 Max Prime vs Kimi K3
Mistral Large 4 vs Llama 4 Maverick- Gemini 4 Argon vs GPT-6.1 Sol
- Claude Opus 5.5 vs Gemini 4 Argon
- Kimi K3 vs Claude Fable 5.1
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- GPT-6.1 Sol vs Claude Opus 5.5
- Claude Fable 5.1 vs GPT-6 Astra
- Claude Haiku 5.5 vs GPT-6 Luna
Grok 4.7 vs GPT-6.1 Sol- Claude Opus 5.5 vs Claude Sonnet 5.5