Z.aiText Generation Model

GLM-5

Z.ai's open-weight GLM-5, MIT-licensed, with a 200K-token context and a thinking toggle for reasoning-heavy prompts. An economical default for chat, extraction, and agentic tool use when the newer 5.2/5.3 tiers are more than a task needs.

import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://api.inference.net/v1",
  apiKey: "<YOUR_API_KEY>",
});

const completion = await openai.chat.completions.create({
  model: "glm-5",
  messages: [
    {
      role: "user",
      content: "What is the meaning of life?"
    }
  ],
  stream: true,
});

for await (const chunk of completion) {
  process.stdout.write(chunk.choices[0]?.delta.content as string);
}

import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://api.inference.net/v1",
  apiKey: "<YOUR_API_KEY>",
});

const completion = await openai.chat.completions.create({
  model: "glm-5",
  messages: [
    {
      role: "user",
      content: "What is the meaning of life?"
    }
  ],
  stream: true,
});

for await (const chunk of completion) {
  process.stdout.write(chunk.choices[0]?.delta.content as string);
}

Prompt caching

Keep the prompt prefix stable and byte-identical across calls.
Pass a stable session_id for routing stickiness and a stable prompt_cache_key for cache affinity.
Check usage.prompt_tokens_details.cached_tokens in the response to confirm cache reads.

{
  "session_id": "my-stable-session",
  "prompt_cache_key": "v1-stable-prefix",
  "messages": [{ "role": "user", "content": "..." }]
}

{
  "session_id": "my-stable-session",
  "prompt_cache_key": "v1-stable-prefix",
  "messages": [{ "role": "user", "content": "..." }]
}

Related models

Model

InputCache readOutput

Kimi K3

1024K input contextVisionToolsReasoning$2.10 / $10.95

256K input contextTools$0.102 / $0.48

125K input context$0.05 / $0.23

$0.05

$0.23

Schematron V2 Turbo

125K input context$0.03 / $0.15

$0.03

$0.15

Start building with GLM-5 today

Serverless, OpenAI-compatible, and billed per token. No commitments.