SpaceXAI: Grok 4.20 vs Z.ai: GLM Latest

They cost about the same for input tokens: SpaceXAI: Grok 4.20 $1.25 per M, Z.ai: GLM Latest $1.15 per M. SpaceXAI: Grok 4.20 is 1.4× cheaper for output tokens: SpaceXAI: Grok 4.20 costs $2.50 per M and Z.ai: GLM Latest costs $3.50 per M. SpaceXAI: Grok 4.20 reads more: SpaceXAI: Grok 4.20 takes up to 2,000,000 tokens of context and Z.ai: GLM Latest up to 1,310,720. SpaceXAI: Grok 4.20 accepts file, image, text; Z.ai: GLM Latest accepts text.

SpaceXAI: Grok 4.20Z.ai: GLM Latest
Model idx-ai/grok-4.20z-ai/glm-latest
Input$1.25 per M$1.15 per M
Output$2.50 per M$3.50 per M
Context length2,000,000 tokens1,310,720 tokens
Acceptsfile, image, texttext
Producestexttext
Served byxaizai

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.