Google: Gemini 3.5 Flash vs Z.ai: GLM 5.3
They cost about the same for input tokens: Google: Gemini 3.5 Flash $1.50 per M, Z.ai: GLM 5.3 $1.40 per M. Z.ai: GLM 5.3 is 2× cheaper for output tokens: Google: Gemini 3.5 Flash costs $9.00 per M and Z.ai: GLM 5.3 costs $4.40 per M. Z.ai: GLM 5.3 reads more: Google: Gemini 3.5 Flash takes up to 1,048,576 tokens of context and Z.ai: GLM 5.3 up to 1,310,720. Google: Gemini 3.5 Flash accepts audio, file, image, text, video; Z.ai: GLM 5.3 accepts text.
| Google: Gemini 3.5 Flash | Z.ai: GLM 5.3 | |
|---|---|---|
| Model id | google/gemini-3.5-flash | z-ai/glm-5.3 |
| Input | $1.50 per M | $1.40 per M |
| Output | $9.00 per M | $4.40 per M |
| Context length | 1,048,576 tokens | 1,310,720 tokens |
| Accepts | audio, file, image, text, video | text |
| Produces | text | text |
| Served by | zai |
Prices are the providers' list prices per million tokens, as of . Both run on your own provider key through one OpenAI-compatible endpoint, with no fee on the tokens.