Claude Sonnet 4 5 20250929
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Model IQ Index
Track coding-model benchmark scores and trends; score scales follow each source
All models
All upstream model scores and 30-day trends
Claude Opus 4.5
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Claude Opus 4 6
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Claude Sonnet 4.6
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Claude Opus 4.7
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Claude Opus 4.8
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Claude Fable 5
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Claude Sonnet 5
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Claude Opus 5
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Claude Fable 5.1
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DeepSeek V4 Flash
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DeepSeek V4 Pro
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GLM 5.2
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Gemini 3.5 Flash Lite
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Gemini 3.8 Flash
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Kimi 2.7
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Kimi K3
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GPT-5.3
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GPT 5.4
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GPT 5.5
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GPT-5.6 Sol
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GPT-5.6 Terra
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GPT-5.6 Luna
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GPT-6 Astra
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Codex GPT-5.6 focus
Current IQ for each Codex configuration
GPT-5.6 Sol max
110
GPT-5.6 Sol xhigh
100
GPT-5.6 Sol high
98
GPT-5.6 Sol medium
98
GPT-5.6 Sol low
81
GPT-5.6 Terra max
108
GPT-5.6 Terra xhigh
85
GPT-5.6 Terra high
81
GPT-5.6 Luna max
108
GPT-5.6 Luna high
70
5.5 xhigh
105
5.5 high
83