Model comparison
GLM-5.3-Flash vs Gemini 3.7 Flash
- Input
- $0.15
- Output
- $0.50
- Context
- 1M
- Released
- 2026-08-26
- Input
- $0.75
- Output
- $3.75
- Context
- 1M
- Released
- 2026-08-13
GLM-5.3-Flash and Gemini 3.7 Flash split the 2 benchmarks both report evenly; GLM-5.3-Flash is cheaper on input tokens ($0.2 vs $0.8 per 1M, 5×); GLM-5.3-Flash ships open weights while Gemini 3.7 Flash is API-only.
Specs and pricing side by side
| Spec | GLM-5.3-Flash | Gemini 3.7 Flash |
|---|---|---|
| Maker | Z.ai (Zhipu / GLM) | |
| Released | 2026-08-26 | 2026-08-13 |
| Context window | 1M | 1Msame |
| Max output | not published | 64K |
| Input price | $0.15 | $0.75 |
| Output price | $0.50 | $3.75 |
| Parameters | 320B total · 18B active (MoE) | Not disclosed |
| License | MIT | Proprietary |
| Weights | Open weights | API only |
| Modalities | Text, Image, Video | Text, Vision, Audio, Video |
| Knowledge cutoff | not published | March 2026 |
Benchmarks both models report
| Benchmark | GLM-5.3-Flash | Gemini 3.7 Flash |
|---|---|---|
| DeepSWE v1.1 | 63.4% | 65.3% |
| AutomationBench | 48.8% | 30.4% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick GLM-5.3-Flash if…
- You care about AutomationBench (it scores higher on 1 shared benchmark).
- Cost matters: input tokens cost 5× less ($0.2 vs $0.8 per 1M).
- You want to self-host or fine-tune (open weights, MIT).
- You need Image input, which Gemini 3.7 Flash lacks.
- Your use case is: vision-driven frontend work: turning screenshots, page images or screen recordings into a running project, then comparing renders against the reference.
Pick Gemini 3.7 Flash if…
- You care about DeepSWE v1.1 (it scores higher on 1 shared benchmark).
- You need Vision / Audio input, which GLM-5.3-Flash lacks.
- Your use case is: reach for it for agentic coding loops that run long tool-using tasks to completion.
FAQ
Which is better, GLM-5.3-Flash or Gemini 3.7 Flash?
GLM-5.3-Flash and Gemini 3.7 Flash split the 2 benchmarks both report evenly; GLM-5.3-Flash is cheaper on input tokens ($0.2 vs $0.8 per 1M, 5×); GLM-5.3-Flash ships open weights while Gemini 3.7 Flash is API-only. The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is GLM-5.3-Flash?
GLM-5.3-Flash: $0.15 input, $0.50 output. Gemini 3.7 Flash: $0.75 input, $3.75 output (list API prices as published by each maker).
What are the context windows of GLM-5.3-Flash and Gemini 3.7 Flash?
GLM-5.3-Flash offers 1M; Gemini 3.7 Flash offers 1M with up to 64K output.
Is GLM-5.3-Flash newer than Gemini 3.7 Flash?
GLM-5.3-Flash was released 2026-08-26; Gemini 3.7 Flash was released 2026-08-13.