GoogleGemini 3 FlashVSZ.ai (Zhipu AI)GLM-5.1
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, GLM-5.1 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 GLM-5.1 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 GLM-5.1 was evaluated on SWE-bench Pro (scoring 58.4%).
Reasoning Accuracy: Both models were evaluated on the GPQA Diamond benchmark. Gemini 3 Flash scored 90.4%, while GLM-5.1 scored 86.2%.
Cost Efficiency: GLM-5.1 pricing ($1.4/M input, $4.4/M output) is 0.5x 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 (+4.2%)
90.4%graduate-level science QA
Cost & Context
Cost (per 1M tokens)1.9x cheaper
$1.13Input: $0.50 | Output: $3.00Context WindowLarger
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
58.4%complex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
86.2%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$2.15Input: $1.40 | Output: $4.40Context Window
202.75k tokensFrequently Asked Questions about Gemini 3 Flash vs GLM-5.1
Gemini 3 Flash is cheaper than GLM-5.1. Gemini 3 Flash has a blended cost of $1.13/1M tokens, which is about 1.9x cheaper than GLM-5.1 at $2.15/1M tokens.
For coding tasks, Gemini 3 Flash scores 78% on swe-bench-verified (multi-file code and clearly defined tasks), while GLM-5.1 scores 58.4% on swe-bench-pro (complex codebases, multi-file repositories, and architectural planning).
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