Gemini 3 Flash Preview vs GLM 5.1
Gemini 3 Flash Preview is cheaper on output tokens, while Gemini 3 Flash Preview offers a larger context window. Choose Gemini 3 Flash Preview or GLM 5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 3 Flash Preview | GLM 5.1 |
|---|---|---|
| Provider | Z.ai | |
| Input / 1M tokens | $0.50 | $0.97 |
| Output / 1M tokens | $3.00 | $3.04 |
| Context window | 1M | 205K |
| Parameters | — | 754B |
| Open weights | No | — |
| Released | Dec 2025 | Apr 2026 |
| SWE-bench Verified score | 75.8 | — |
| GPQA Diamond score | 89.4 | 89.9 |
| FrontierMath score | 35.6 | 33.5 |
| LiveBench score | — | 70.6 |
| LMArena (Chatbot Arena) Elo score | — | 1463 |
| LMArena WebDev Elo score | — | 1508 |
| Epoch Capabilities Index score | — | 150 |
FAQ
Is Gemini 3 Flash Preview or GLM 5.1 cheaper?
Gemini 3 Flash Preview is cheaper on output tokens ($3.00 vs $3.04 per 1M).
Which has the larger context window, Gemini 3 Flash Preview or GLM 5.1?
Gemini 3 Flash Preview has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.