Moonshot AI (Kimi)kimi-k2.6VSOpenAIGPT-5.4 mini
Our Take
We recommend kimi-k2.6 for its clear benchmark advantage, or the 1.0x cheaper GPT-5.4 mini only if your budget requires optimizing costs for very high-volume pipelines. While kimi-k2.6 offers superior reasoning and coding, it carries a moderate price premium. Choose kimi-k2.6 for quality, or GPT-5.4 mini for cost optimization.
▶WHY?
Benchmark Calculations & Evidence:
Coding Benchmarks: Both models were evaluated on the SWE-bench Pro benchmark. kimi-k2.6 scored 58.6%, while GPT-5.4 mini scored 54.4%.
Reasoning Benchmarks: Both models were evaluated on the GPQA Diamond benchmark. kimi-k2.6 scored 90.5%, while GPT-5.4 mini scored 87.5%.
Cost Efficiency: GPT-5.4 mini pricing ($0.75/M input, $4.5/M output) is 1.0x cheaper than kimi-k2.6 ($0.95/M input, $4/M output).
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Benchmarks & Scores
Coding (swe-bench-pro)Winner (+4.2%)
58.6%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+3.0%)
90.5%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$1.71Input: $0.95 | Output: $4.00Context Window
262.14k tokensBenchmarks & Scores
Coding (swe-bench-pro)
54.4%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
87.5%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$1.69Input: $0.75 | Output: $4.50Context WindowLarger
400k tokensFrequently Asked Questions about kimi-k2.6 vs GPT-5.4 mini
GPT-5.4 mini is cheaper than kimi-k2.6. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 1.0x cheaper than kimi-k2.6 at $1.71/1M tokens.
kimi-k2.6 is better for coding tasks on this benchmark. It scores 58.6% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning) compared to GPT-5.4 mini which scores 54.4%.
Related Matchups
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