Z.AI
Ultra-low latency version of GLM-5.3-Flash engineered for high-concurrency real-time IDE code completion and interactive agents.
200K ctx$0.37 / 1M tok (Ultra-Low Latency MoE)
Introducing GLM-5.2Z.AIReleased June 16, 2026
GLM-5.2
Flagship model built for project-scale context, supporting truly usable 1M-token context with 128k output.
reasoning-llmProprietary API$1.40 / 1M tok (1M Lossless Context)Context: 1M (1,000,000 tokens)Arena ELO: 1495
Technical Specifications
Architecture Type
1M Lossless Context Frontier Transformer
Total Parameters
Fifth-Gen Scale
Context Window
1M (1,000,000 tokens)
Max Output Tokens
128K (128,000 tokens)
Knowledge Cutoff
May 2026
Supported Modalities
text, code, reasoning
License & Access
Z.AI Terms of Service
Benchmark Evaluations
Mmlu Pro
88.5
Humaneval
97.2
Swe Bench Verified
78.2
Chatbot Arena ELO
1495
Deep Architectural Overview
GLM-5.2 eliminates context drift and goal forgetting across massive repositories. A single task can complete the full development lifecycle—from user requirements to deployable multi-platform products—over 1,000,000 tokens of context.
Strengths & Considerations
Core Strengths
- Truly usable 1,000,000 token lossless context
- 128,000 tokens of maximum output generation
- Handles full project-scale engineering context without drift
Known Limitations
- Post-training superseded by GLM-5.3 for cybersecurity and code bench
Token & API Pricing
Input Tokens (1M)$1.40
Output Tokens (1M)$4.40
Cached Input (1M)$0.2600
Pricing is verified directly against Z.AI's developer documentation and API rate sheets.
Similar & Alternative Models
Explore other frontier models from Z.AI and comparable reasoning engines.
Z.AI
The first native multimodal model in the GLM-5 series: 320B parameters (18B active) combining linear and sparse attention for low-cost visual coding.
200K ctx$0.15 / 1M tok (320B MoE Visual Coding)
Z.AI
Z.AI’s premier flagship model, delivering a 50% performance gain on Code Bench and matching Claude Mythos 5 in cybersecurity and vulnerability discovery.
1M ctx$1.40 / 1M tok (Flagship Coding & Cyber)
Z.AI
Engineered for long-horizon tasks, able to work independently for up to 8 hours in a single run, aligned with Claude Opus 4.6.
200K ctx$1.40 / 1M tok (8h Autonomous Agent)