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PiazBench
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Coding

How well can each AI model write, debug, and refactor code? Ranked by Artificial Analysis Coding Index.

RankModelScore
1
OpenAI
GPT-5openai/gpt-5-6-sol-xhigh
78.3
2
OpenAI
GPT-5openai/gpt-5-6-terra
76.7
3
Anthropic
Claude Fable 5anthropic/claude-fable-5
76.5
4
K
Kimi K3kimi/kimi-k3
76.2
5
OpenAI
GPT-5openai/gpt-5-5
74.9
6
Anthropic
Claude Opus 4.8anthropic/claude-opus-4-8
74.3
7
Anthropic
Claude Opus 4.7anthropic/claude-opus-4-7
73.6
8
S
Grok 4xai/grok-4-5
72.4
9
Anthropic
Claude Sonnet 5anthropic/claude-sonnet-5
71.5
10
OpenAI
GPT-5openai/gpt-5-6-luna
71.4
11
Meta
Muse Sparkmeta/muse-spark-1-1
71.3
12
OpenAI
GPT-5openai/gpt-5-4
71.1
13
Google
Gemini 3.5 Flashgoogle/gemini-3-5-flash
70.1
14
Google
Gemini 3.1 Progoogle/gemini-3-1-pro-preview
68.8
15
Z
GLM 5.2zai/glm-5-2
68.8
16
Alibaba
Qwen3.7 Maxalibaba/qwen3-7-max
66.0
17
Anthropic
Claude Sonnet 4.6anthropic/claude-sonnet-4-6-adaptive
63.0
18
K
Kimi K2.6kimi/kimi-k2-6
61.8
19
K
Kimi K2.7 Codekimi/kimi-k2-7-code
60.8
20
X
MiMo V2.5 Proxiaomi/mimo-v2-5-pro
60.2
21
K
KAT Coder Pro V2kwaikat/kat-coder-pro-v2
59.5
22
DeepSeek
DeepSeek V4 Prodeepseek/deepseek-v4-pro
59.4
23
N
Nex N2 Pronex/nex-n2-pro
59.1
24
T
Hy3tencent/hy3
58.8
25
Meta
Muse Sparkmeta/muse-spark
58.6
26
MiniMax
MiniMax M3minimax/minimax-m3
58.6
27
X
MiMo V2.5xiaomi/mimo-v2-5-0424
56.8
28
DeepSeek
DeepSeek V4 Flashdeepseek/deepseek-v4-flash
56.2
29
OpenAI
GPT-5openai/gpt-5-4-nano
56.1
30
Alibaba
Qwen3.7 Plusalibaba/qwen3-7-plus
55.9

135 models tested