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GLM 5.3 Prime

Tools
z-ai/glm-5.3-prime

Text · 1M context · Sep 2026 · 5 upstreams

GLM 5.3 Prime is the top reasoning tier of Z.ai's GLM 5.3 line, above the Flash and FlashX cuts. It has a 1M-token context window and supports function calling and streaming with text in and text out.

Needs your own keyTo use GLM 5.3 Prime, add a key from OpenRouter, AIHubMix, Nous Research or 2 more. AnyRouter adds no fee.
context
1M
input / 1M (list)
$1.40
output / 1M (list)
$4.40
routes
5
speed, 24h
No data yet

Upstreams

5
  1. 1OpenRouterYour keynot addedBilled to your key
  2. 2AIHubMixYour keynot addedBilled to your key
  3. 3Nous ResearchYour keynot addedBilled to your key
  4. 4ZenMuxYour keynot addedBilled to your key
  5. 5InfronYour keynot addedBilled to your key

Quick start

curl
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "z-ai/glm-5.3-prime",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'

Details

Owner
Zhipu AI
Kind
Chat
Released
Sep 2026
Context
1M
Data policy
Provider retention
Endpoint
/api/v1/chat/completions