GLM 5.3 Flash vs GPT-3.5 Turbo Instruct
Price, context window & benchmark comparison
VS
Compare different models
Verdict: GLM 5.3 Flash is 32.8× cheaper than GPT-3.5 Turbo Instruct on a typical 3:1 input/output mix. GLM 5.3 Flash has the larger context window (1M vs 4K).
| GLM 5.3 Flash | GPT-3.5 Turbo Instruct | |
|---|---|---|
| Input price / 1M | $0.0399 | $1.50 |
| Output price / 1M | $0.0784 | $2.00 |
| Blended price (3:1) | $0.0495 | $1.63 |
| Cached input / 1M | $0.03 | — |
| Context window | 1M | 4K |
| 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 | No |
| Released | 2026-08-26 | 2023-09-28 |
| Retirement | — | — |
Cost calculator
FAQ
Which is cheaper, GLM 5.3 Flash or GPT-3.5 Turbo Instruct?
GLM 5.3 Flash is 32.8× cheaper than GPT-3.5 Turbo Instruct on a typical 3:1 input/output mix.
GLM 5.3 Flash vs GPT-3.5 Turbo Instruct: which has a bigger context window?
GLM 5.3 Flash: 1,048,576 tokens. GPT-3.5 Turbo Instruct: 4,095 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 Instruct ≈ $4,000.
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 Instruct vs Gemini 4 CarbonGPT-3.5 Turbo Instruct vs Claude Fable 5.2GPT-3.5 Turbo Instruct vs Gemini Omni 1.2 FlashGPT-3.5 Turbo Instruct vs Gemini Omni 1.1 FlashGPT-3.5 Turbo Instruct vs Hy4GPT-3.5 Turbo Instruct vs GLM 5.3 FlashX LegalGPT-3.5 Turbo Instruct vs GPT-6.1 TerraGPT-3.5 Turbo Instruct vs GPT-6.1 Terra Pro