GLM 5.3 Flash vs GPT-3.5 Turbo 16k
Price, context window & benchmark comparison
VS
Compare different models
Verdict: GLM 5.3 Flash is 65.6× cheaper than GPT-3.5 Turbo 16k on a typical 3:1 input/output mix. GLM 5.3 Flash has the larger context window (1M vs 16K).
| GLM 5.3 Flash | GPT-3.5 Turbo 16k | |
|---|---|---|
| Input price / 1M | $0.0399 | $3.00 |
| Output price / 1M | $0.0784 | $4.00 |
| Blended price (3:1) | $0.0495 | $3.25 |
| Cached input / 1M | $0.03 | — |
| Context window | 1M | 16K |
| Max output | 131K | 4K |
| Intelligence index | 27.8 | — |
| Coding index | 71.5 | — |
| Providers | 42 | — |
| Best provider uptime (30m) | 100.0% | — |
| Vision input | Yes | No |
| Reasoning | Yes | No |
| Tool calling | Yes | Yes |
| Released | 2026-08-26 | 2023-08-28 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GLM 5.3 Flash or GPT-3.5 Turbo 16k?
GLM 5.3 Flash is 65.6× cheaper than GPT-3.5 Turbo 16k on a typical 3:1 input/output mix.
GLM 5.3 Flash vs GPT-3.5 Turbo 16k: which has a bigger context window?
GLM 5.3 Flash: 1,048,576 tokens. GPT-3.5 Turbo 16k: 16,385 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: GLM 5.3 Flash ≈ $119.00, GPT-3.5 Turbo 16k ≈ $8,000.
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 4GPT-3.5 Turbo 16k vs Gemini 4 CarbonGPT-3.5 Turbo 16k vs Claude Fable 5.2GPT-3.5 Turbo 16k vs Gemini Omni 1.2 FlashGPT-3.5 Turbo 16k vs Gemini Omni 1.1 FlashGPT-3.5 Turbo 16k vs Hy4GPT-3.5 Turbo 16k vs GLM 5.3 FlashX LegalGPT-3.5 Turbo 16k vs GPT-6.1 TerraGPT-3.5 Turbo 16k vs GPT-6.1 Terra Pro