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Put models side by side on price, context, capabilities, and benchmarks.

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This is the batch-processing variant of Z.ai's open-weight GLM-5.3 flagship model, offering the same 743B-parameter, 1M-token coding and long-horizon agentic capabilities at lower cost for asynchronous workloads.

Life, Physical, & Social Science#19Medicine & Healthcare#22Mathematical#26Software & IT Services#28
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AuthorZ.AI
Country🇨🇳 China
ReleasedAug 18, 2026
Overview
Cost rate
0.4x
Context
1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.45
Cached input$0.10
Output$2.00
Context
Context length1,048,576
Max output tokens131,072
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#72Entertainment, Sports, & Media#88
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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
Throughput92 tok/s
Latency2.79s

Benchmarks

Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.

Intelligence

57.6
Claude Opus 5.5 (Max, Default Fallback)
56.0
Claude Sonnet 5.5 (Max, Default Fallback)
55.1
Kimi K3.1 Pro
53.4
Claude Fable 5.1 (Max, Default Fallback)
34.6
GPT-6 Luna
34.3
GLM 5.3 (batch)

Coding

81.6
Claude Fable 5.1 (Max, Default Fallback)
78.3
GPT-5.6 Sol (Xhigh)
78.0
Claude Opus 5 (Max)
77.1
GPT-6 Astra (High)
76.8
Grok 4.6 (High)
74.8
GLM 5.3 (batch)

GPT-6 Luna has no data

Automation & Tool Use

57.9
Claude Fable 5.1 (Max, Default Fallback)
56.5
Claude Opus 5 (Max)
56.0
Qwen3.8 Max (0902)
55.5
Muse Spark 1.3 (Max)
53.1
GLM-5.3 (Max)
53.1
GLM 5.3 (batch)

GPT-6 Luna has no data

Intelligence, coding & agentic scores from Artificial Analysis.

Software & IT Services

arena.ai
1549
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)
1534
Muse Wonder (Max)
1532
Muse Spark 1.2 (xHigh)
1530
Claude Fable 5.1 (Max)
1513
GLM 5.3 (batch)
1491
GPT-6 Luna

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