OpenRouter model
Z.ai: GLM 5.3
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks. It supports text input and output with a 1M-token context window, and improves...
- Provider
- OpenRouter
- Availability
- Available
- Model ID
- z-ai/glm-5.3
- Snapshot
- 2026-10-07
Z.ai: GLM 5.3 Benchmarks & Agentic Accuracy
Verified primary research & developer preference metrics
What This Means in Real Software Development
- 56.4% on SWE-bench Verified, matching leading proprietary coding models.
- Large-scale Mixture-of-Experts architecture with low active parameters for high inference speed (70 TPS).
- 75.0% on AIME confirms strong mathematical deduction and algorithmic reasoning.
- Available on Fireworks AI and OpenRouter with enterprise SLA.
Swarm Multi-Agent Topology
Best Paired With: Gemini 3.8 Flash or Claude 3.7 Sonnet
High code synthesis accuracy and affordable token costs make it an effective Coder subagent.
Executes isolated bug fixes and code refactors in dedicated Git worktrees.
What Developers & Practitioners Are Saying
Real-world field observations, production strengths, and developer consensus
"Zhipu AI's flagship bilingual model. Highly proficient in both English and Chinese codebases with strong API integration."
Verified Real-World Strengths
- 56.4% SWE-bench Verified
- Excellent cross-lingual documentation and code commentary
- Competitive token economics
Production Caveats & Gaps
- Occasionally defaults to Chinese comments unless English is explicitly enforced
Primary Sources & Methodology Citations
- GLM-5.3 Technical Architecture — Zhipu AI (February 2026)
Head-to-Head Frontier Comparisons: Z.ai: GLM 5.3 vs Rivals
Standardized, side-by-side benchmark & economics comparison against peer models
| Model | Role / Tier | SWE-bench | LiveCodeBench | LMSYS Elo | AIME | Input / Output |
|---|---|---|---|---|---|---|
Z.ai: GLM 5.3OpenRouterCurrent | Tier 2: High-Performance Open MoE | 56.4% | 51% | 1350 | 75% | $0.35 / $1.05 |
DeepSeek R1DeepSeek Compare Z.ai: GLM 5.3 vs DeepSeek R1 → | Tier 2: Deep Algorithmic Specialist | 49.2% | 49.8% | 1360 | 79.8% | $0.55 / $2.19 |
OpenAI GPT-6 LunaOpenAI Compare Z.ai: GLM 5.3 vs OpenAI GPT-6 Luna → | Tier 2: Extreme Efficiency Subagent | 64.5% | 56.8% | 1358 | — | $0.12 / $0.48 |
Qwen 3.8 27BQwen Compare Z.ai: GLM 5.3 vs Qwen 3.8 27B → | Tier 2: Open-Weights Specialist | 62% | 54.5% | 1342 | — | $0.2 / $0.8 |
GLM 5.3 FlashZhipu AI Compare Z.ai: GLM 5.3 vs GLM 5.3 Flash → | Tier 2: High-Speed Coder Subagent | 66.8% | 58.5% | 1365 | — | $0.3 / $1.2 |
Z.ai: GLM 5.3 model overview
Z.ai: GLM 5.3 is listed in the public Swarm catalog through OpenRouter. This page summarizes the verified catalog fields used by Swarm without claiming real-time access for every provider account.
- Provider
- OpenRouter
- Family
- OpenRouter
- Context window
- 1.31M tokens
- Thinking support
- low · high · max
- Availability status
- Available
- Catalog ID
- openrouter/z-ai/glm-5.3
Run Z.ai: GLM 5.3 in Swarm
Verified CLI workflow & multi-agent architecture
swarm ctl model set --provider openrouter --model openrouter/z-ai/glm-5.3# Or switch interactively inside the terminal TUI:
/modelsSubagent Role Matrix
Assign Z.ai: GLM 5.3 to specialized system roles in ~/.swarm/config.json:
- Primary / Planner: Orchestrates full task DAGs and multi-stage pipelines.
- Coder Subagent: Generates code and unit tests inside private Git worktrees.
- Finder Subagent: Performs read-only code search, symbol discovery, and mapping.
Public catalog snapshot. Catalog availability is not a real-time provider status or an access guarantee.