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

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Claude Sonnet 5 is Anthropic's most capable Sonnet-tier model, bringing near-Opus intelligence to coding, agentic workflows, and professional knowledge work at Sonnet-level cost. It is a strict improvement over Sonnet 4.6 across the cost-performance curve and serves as the default model for Anthropic's Free and Pro plans.

Document analysis#15Mathematical#40Life, Physical, & Social Science#43Image understanding#44
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AuthorAnthropic
Country🇺🇸 United States
ReleasedJun 30, 2026
Overview
Cost rate
2x
Context
1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$2.00
Cached input$0.20
Output$10.00
Context
Context length1,000,000
Max output tokens128,000
Knowledge cutoff-
Performance
Throughput69 tok/s
Latency6.87s

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
24.3
Claude Sonnet 5

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)
71.5
Claude Sonnet 5

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)
43.6
Claude Sonnet 5

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)
1505
Claude Sonnet 5
1491
GPT-6 Luna

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