GoogleGemini 3 FlashVSMoonshot AI (Kimi)kimi-k2.5
Our Take
We recommend Gemini 3 Flash for superior overall value and reasoning capabilities, as it is cheaper or equal in cost while delivering peak intelligence. While Gemini 3 Flash excels at complex multi-file code and clearly defined tasks, kimi-k2.5 is suited for scripting complex codebases, multi-file repositories, and architectural planning. Choose Gemini 3 Flash for multi-file code and clearly defined tasks, or kimi-k2.5 if you specifically require its simpler functions profile.
▶WHY?
Benchmark Calculations & Evidence:
Coding Evaluation: Gemini 3 Flash was evaluated on SWE-bench Verified (scoring 78%), while kimi-k2.5 was evaluated on SWE-bench Pro (scoring 50.7%).
Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Gemini 3 Flash scored 90.4%, while kimi-k2.5 scored 87.6%.
Cost Efficiency: kimi-k2.5 pricing ($0.6/M input, $3/M output) is 0.9x cheaper than Gemini 3 Flash ($0.5/M input, $3/M output).
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Benchmarks & Scores
Coding (swe-bench-verified)
78%multi-file code and clearly defined tasks
Reasoning (gpqa-diamond)Winner (+2.8%)
90.4%graduate-level science QA
Cost & Context
Cost (per 1M tokens)1.1x cheaper
$1.13Input: $0.50 | Output: $3.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
50.7%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
87.6%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$1.20Input: $0.60 | Output: $3.00Context Window
262.14k tokensFrequently Asked Questions about Gemini 3 Flash vs kimi-k2.5
Gemini 3 Flash is cheaper than kimi-k2.5. Gemini 3 Flash has a blended cost of $1.13/1M tokens, which is about 1.1x cheaper than kimi-k2.5 at $1.20/1M tokens.
For coding tasks, Gemini 3 Flash scores 78% on swe-bench-verified (multi-file code and clearly defined tasks), while kimi-k2.5 scores 50.7% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning).
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