Z.ai: GLM 4.5

Z.aiOpen weights

Z.ai: GLM 4.5 by Z.ai costs $0.60 per 1M input tokens and $2.20 per 1M output tokens, with a 131K-token context window.

Pricing

Input (per 1M tokens)

$0.60

Output (per 1M tokens)

$2.20

Cached input (per 1M)

$0.11

Specifications

Provider: Z.ai
Context window: 131K tokens
Parameters: 355B
Released: Aug 2025
Open weights: Yes
Frontier model: No
Hugging Face: zai-org/GLM-4.5

Benchmarks

LMArena (Chatbot Arena) Elo: 1430.0
SWE-bench Verified: 64.2

Speed & latency

Time to first token

3.89s

Output speed

65 tok/s

Fastest host: zai (via vercel-ai-gateway).

Compare Z.ai: GLM 4.5 with…

Z.ai: GLM 4.5 vs MiniMax M1$2.20/1M Z.ai: GLM 4.5 vs GLM 4.7$2.20/1M Z.ai: GLM 4.5 vs Qwen3.8 27B$2.20/1M Z.ai: GLM 4.5 vs amazon--nova-pro$2.13/1M Z.ai: GLM 4.5 vs Kimi K2 0711$2.30/1M Z.ai: GLM 4.5 vs Mistral Large 4$2.09/1M

FAQ

How much does Z.ai: GLM 4.5 cost?

Z.ai: GLM 4.5 is priced at $0.60 per 1M input tokens and $2.20 per 1M output tokens. Output tokens cost more than input.

What is Z.ai: GLM 4.5's context window?

Z.ai: GLM 4.5 supports a context window of 131K tokens — the maximum prompt plus response length it can handle in a single request.

Is Z.ai: GLM 4.5 open weight?

Yes — Z.ai: GLM 4.5 has openly available weights.

Data as of 2026-10-15. Source: Pricing via OpenRouter API, openrouter.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.