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Best LLM for competitive programming

Claude Fable 5.1 leads
90.5%
models ranked
95
lead over #2
+0.7 pts

LiveCodeBench (Vals AI) · read October 21

livecodebench_vals_ai.py


        # LiveCodeBench (Vals AI), read October 21
        leaders = {
            "Claude Fable 5.1": 90.5%,    "Claude Fable 5": 89.8%,    "Gemini 3.8 Flash": 89.5%,
        }
      

As of October 21, 2026, Anthropic Claude Fable 5.1 leads 95 models on LiveCodeBench (Vals AI) with 90.5%, ahead of Anthropic Claude Fable 5 (89.8%) and Google Gemini 3.8 Flash (89.5%).

The full best LLM for coding ranking combines this benchmark with others.

Top 20 of 95, higher is better

Embed this data
Best LLM for competitive programming
Rank Model LiveCodeBench (Vals AI) Coding evidence Coding index Output $/Mtok
1
Claude Fable 5.1 Anthropic
90.5%
84.2 $50.00
2
Claude Fable 5 Anthropic
89.8%
79.3 $50.00
3
89.5%
61.6 $3.75
4
Claude Opus 5 Anthropic
89.0%
83.0 $25.00
5
88.7%
58.0 $3.75
6
88.5%
32.3 $12.00
7
Grok 4.6 xAI
88.2%
65.7 $6.00
8
88.1%
62.5 $3.75
9
GPT-5.2-Codex OpenAI
88.0%
45.4 $14.00
10
87.8%
62.4 $6.00
11
Claude Opus 4.8 Anthropic
87.8%
65.0 $25.00
12
87.6%
39.8 $9.00
13
87.5%
56.1 $1.98
14
87.5%
38.7 $2.716
15
Grok 4.5 xAI
87.3%
58.6 $6.00
16
GPT-5.3-Codex OpenAI
87.3%
60.0 $14.00
17
87.3%
51.8 $0.28
18
Kimi K3 Moonshot AI
87.2%
62.3 $15.00
19
87.1%
54.1 $4.425
20
Kimi K2.6 Moonshot AI
86.8%
52.1 $4.00

How this list is built

Generated from the dataset on every refresh. Nobody picks the order by hand.

Models by their LiveCodeBench (Vals AI) result, as the board publishes it, best first. Competitive programming problems collected after the models were trained, run by Vals AI. Share solved.

Other lists

Rankings beyond coding · Methodology