GLM 5.3 Flash vs o4 Mini
Price, context window & benchmark comparison
VS
Compare different models
Verdict: GLM 5.3 Flash is 38.9× cheaper than o4 Mini on a typical 3:1 input/output mix. GLM 5.3 Flash has the larger context window (1M vs 200K).
| GLM 5.3 Flash | o4 Mini | |
|---|---|---|
| Input price / 1M | $0.0399 | $1.10 |
| Output price / 1M | $0.0784 | $4.40 |
| Blended price (3:1) | $0.0495 | $1.93 |
| Cached input / 1M | $0.03 | $0.28 |
| Context window | 1M | 200K |
| Max output | 131K | 100K |
| Intelligence index | 27.8 | — |
| Coding index | 71.5 | — |
| Providers | 42 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-08-26 | 2025-04-16 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GLM 5.3 Flash or o4 Mini?
GLM 5.3 Flash is 38.9× cheaper than o4 Mini on a typical 3:1 input/output mix.
GLM 5.3 Flash vs o4 Mini: which has a bigger context window?
GLM 5.3 Flash: 1,048,576 tokens. o4 Mini: 200,000 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GLM 5.3 Flash ≈ $119.00, o4 Mini ≈ $4,400.
More comparisons
GLM 5.3 Flash vs Gemini 4 CarbonGLM 5.3 Flash vs Claude Fable 5.2GLM 5.3 Flash vs Gemini Omni 1.2 FlashGLM 5.3 Flash vs Gemini Omni 1.1 FlashGLM 5.3 Flash vs Hy4GLM 5.3 Flash vs GLM 5.3 FlashX LegalGLM 5.3 Flash vs GPT-6.1 TerraGLM 5.3 Flash vs GPT-6.1 Terra ProGLM 5.3 Flash vs Kimi K3.1 ProGLM 5.3 Flash vs MiniMax M3.1 FlashGLM 5.3 Flash vs DeepSeek V4.1 Flash 1017GLM 5.3 Flash vs Nemotron 3.5 Super VLGLM 5.3 Flash vs Gemini 4 ArgonGLM 5.3 Flash vs Claude Haiku 5.5GLM 5.3 Flash vs Nano Banana 2.1GLM 5.3 Flash vs Mistral Large 4o4 Mini vs Gemini 4 Carbono4 Mini vs Claude Fable 5.2o4 Mini vs Gemini Omni 1.2 Flasho4 Mini vs Gemini Omni 1.1 Flasho4 Mini vs Hy4o4 Mini vs GLM 5.3 FlashX Legalo4 Mini vs GPT-6.1 Terrao4 Mini vs GPT-6.1 Terra Pro