Z.ai: GLM-4.5
GLM-4.5 is a reasoning model from Z.ai released on Jul 28, 2025. It reads text and writes text, with a 131K token context window and up to 98K tokens per reply.
Show moreShow less
It costs $0.60 per million input tokens and $2.20 per million output tokens. Cached input bills at $0.11, 82% less than fresh input.
It supports tool calling, structured JSON output and prompt caching, and its weights are open, so you can host it yourself.
17 providers serve it, including Hugging Face, Vercel AI Gateway and 302.AI. The lowest input price is $0.286 per million tokens at 302.AI.
- Modalities
- In / out price
- $0.60 / $2.20 per 1M
- Context
- 131K
- Max output
- 98K
- Released
- Jul 28, 2025
- Knowledge cutoff
- Apr 2025
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
GLM-4.5 pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.60 / 1M tokens | |
|---|---|---|
| Output | $2.20 / 1M tokens | |
| Cached input (read) | $0.11 / 1M tokens | 82% off input |
| Cache write | $0 / 1M tokens |
GLM-4.5 providers
17 providers serve it, including Hugging Face, Vercel AI Gateway and 302.AI. The lowest input price is $0.286 per million tokens at 302.AI. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Zhipu AI First party | $0.60 | $2.20 | $0.11 | 131K | 98K |
| Hugging Face | $0.60 | $2.20 | – | 131K | 98K |
| Vercel AI Gateway | $0.60 | $2.20 | $0.11 | 128K | 96K |
| 302.AI | $0.286 | $1.14 | – | 131K | 98K |
| ZenMux | $0.2911 | $1.16 | $0.0582 | 128K | 96K |
| NanoGPT | $0.30 | $1.30 | $0.15 | 128K | 66K |
| Abacus | $0.60 | $2.20 | – | 131K | 96K |
| DevPass (LLM Gateway) | $0.60 | $2.20 | $0.11 | 131K | 98K |
| Impossibl | $0.60 | $2.20 | $0.11 | 131K | 98K |
| Kilo Gateway | $0.60 | $2.20 | $0.11 | 131K | 98K |
| LLM Gateway | $0.60 | $2.20 | $0.11 | 128K | 98K |
| Merge Gateway | $0.60 | $2.20 | $0.11 | 128K | 98K |
Showing 12 of 17 providers: the lab first, then the major clouds, then the cheapest resellers.
What GLM-4.5 costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call GLM-4.5 through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
Alternatives to GLM-4.5
Models that take the same inputs and call tools, closest in price, cheaper ones first.
- Index 22.2
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 24 providers.
by googleJul 9, 20261.05M context$0.30/M input tokens$2.50/M output tokens24 providers
- 1.05M context
Reads text, images, files, audio and video. Tool calling, structured output, reasoning. Served by 32 providers.
by googleMar 20, 2025$0.30/M input tokens$2.50/M output tokens32 providers
- Index 25.2
Reads text, images and video. Tool calling, structured output, reasoning. Served by 24 providers.
by qwenJun 2, 20261M context$0.40/M input tokens$1.60/M output tokens24 providers
- 256K context
Reads text, images and video. Tool calling, structured output, reasoning. Served by 6 providers.
by bytedance-seedJun 23, 2026$0.50/M input tokens$2.50/M output tokens6 providers
- 262K context
Reads text and images. Tool calling, reasoning.
by bytedanceJun 23, 2026$0.50/M input tokens$2.50/M output tokens
- 1M context
Reads text. Tool calling, structured output, reasoning. Served by 20 providers.
by nvidiaJun 4, 2026$0.50/M input tokens$2.50/M output tokens20 providers
More from Z.ai
- 1.05M context
Reads text and images. Tool calling, reasoning.
by z-aiOct 5, 2026$0.15/M input tokens$0.50/M output tokens
- 1.05M context
Reads text and images. Tool calling, reasoning.
by z-aiOct 5, 2026$0.15/M input tokens$0.50/M output tokens
- 1.05M context
Reads text. Tool calling, reasoning.
by z-aiSep 26, 2026$1.25/M input tokens$2.25/M output tokens
- 1M context
Reads text. Tool calling, reasoning.
by z-aiSep 23, 2026$2.80/M input tokens$8.80/M output tokens
- 1.05M context
Reads text and images. Tool calling, reasoning.
by z-aiSep 19, 2026$0.15/M input tokens$0.50/M output tokens
- 1.05M context
Reads text, images and video. Tool calling, reasoning.
by z-aiSep 18, 2026$0.37/M input tokens$1.25/M output tokens
GLM-4.5 questions
How much does the GLM-4.5 API cost?
$0.60 per million input tokens and $2.20 per million output tokens, with cached input at $0.11. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of GLM-4.5?
131,072 tokens of input, and it can write up to 98,304 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve GLM-4.5?
17 providers serve it, including Hugging Face, Vercel AI Gateway and 302.AI. The lowest input price is $0.286 per million tokens at 302.AI. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does GLM-4.5 support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is GLM-4.5 open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was GLM-4.5 released?
Jul 28, 2025, with training data up to Apr 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.
Building on GLM-4.5?
I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.
Book Meeting