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This is an alias that always points to Google's latest Gemini Flash model.

Life, Physical, & Social Science#9Entertainment, Sports, & Media#9Writing, Literature, & Language#10Mathematical#12
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AuthorGoogle
Country🇺🇸 United States
ReleasedApr 27, 2026
Overview
Cost rate
0.8x
Context
1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.75
Cached input$0.07
Output$3.75
Context
Context length1,048,576
Max output tokens65,536
Knowledge cutoff-
Performance
Throughput-
Latency-

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#66Mathematical#70Software & IT Services#73Entertainment, Sports, & Media#89
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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
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)
56.9
GPT-6 Astra (Max)
54.6
GPT-6.1 Sol (Max)
54.5
Claude Sonnet 5.5 (Max, Default Fallback)
30.1
Gemini Flash Latest
23.5
GPT-6 Luna

Coding

80.7
Claude Fable 5.1
78.3
GPT-5.6 Sol
78.0
Claude Opus 5
76.9
GPT-6 Astra
76.7
GPT-5.6 Terra
76.5
Claude Fable 5

Gemini Flash Latest has no data

GPT-6 Luna has no data

Automation & Tool Use

57.2
Claude Fable 5.1
56.5
Claude Opus 5
56.0
Qwen3.8 Max (0902)
55.5
Muse Spark 1.3
53.1
GLM 5.3
52.5
Grok 4.6

Gemini Flash Latest has no data

GPT-6 Luna has no data

Intelligence, coding & agentic scores from Artificial Analysis.

Software & IT Services

arena.ai
1550
Gemini 4 Argon (High)
1540
Claude Opus 4.7 (High)
1538
Claude Fable 5 (High)
1538
Claude Opus 5.5 (High)
1537
Claude Opus 4.6 (High)
1535
Muse Wonder (Max)
1534
Muse Spark 1.2 (xHigh)
1530
GPT-6.1 Sol (Max)
1518
Gemini Flash Latest
1491
GPT-6 Luna

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