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Zhipu AI · Long-Horizon Flagship · Just Released

GLM-5.1 API

Zhipu's newest flagship (April 2026). Dramatically enhanced coding. Autonomously plans, executes, and iterates for up to 8 hours in a single task, delivering engineering-grade results.

$0.80
Input / 1M tokens
$3.00
Output / 1M tokens
200K
Context window
8 hr
Autonomous task
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Why use GLM-5.1 on NovAI?

  • Long-horizon autonomous execution - single task can run 8+ hours with self-planning, execution, and iterative refinement
  • SOTA coding - major uplift over GLM-5, benchmark-leading on real-world engineering tasks
  • Engineering-grade delivery - designed to produce production-ready code, not just snippets
  • 200K context - full-repo reasoning and cross-file refactoring
  • Agentic Engineering paradigm - built for the shift from "vibe coding" to autonomous software agents
  • Hong Kong low-latency access through NovAI's zero-fee gateway

Best use cases

  • Autonomous software engineering agents (full-feature delivery)
  • Multi-file refactoring and repo-level migrations
  • Long-running research agents with plan-execute-revise loops
  • CI-integrated code review and auto-fix agents
  • Complex enterprise workflow automation

Quick start

cURL

curl https://aiapi-pro.com/v1/chat/completions \
  -H "Authorization: Bearer $NOVAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "glm-5.1",
    "messages": [{"role":"user","content":"Build a todo app in Python Flask"}]
  }'

Python (OpenAI SDK)

from openai import OpenAI
client = OpenAI(
    base_url="https://aiapi-pro.com/v1",
    api_key="YOUR_NOVAI_API_KEY",
)
resp = client.chat.completions.create(
    model="glm-5.1",
    messages=[{"role":"user","content":"Build a todo app in Python Flask"}],
)
print(resp.choices[0].message.content)

Try GLM-5.1 today

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