GLM 5
GLM-5 is Z.ai’s flagship open-source foundation model engineered for complex systems design and long-horizon agent workflows. Built for expert developers, it delivers production-grade performance on large-scale programming tasks, rivaling leading closed-source models. With advanced agentic planning, deep backend reasoning, and iterative self-correction, GLM-5 moves beyond code generation to full-system construction and autonomous execution.
Context window
This model accepts 203K tokens in one request (~152K words of text).
What fits in one request
- FitsShort documentAbout 1,500 words of text
- FitsLong documentAbout 37K words of text
- FitsSmall codebaseAbout 150K words of text
- Won't fitFull novelAbout 375K words of text
Specifications
Context size, pricing, and release info in one place.
- Context window
- 202,752 tokens (203K)
- Max output tokens
- 128,000 tokens (128K)
- Speed tier
- balanced
- Provider
- Z Ai
- Release date
- Feb 2026
- Input cost
- $0.950/M / 1M tokens
- Output cost
- $3.15/M / 1M tokens
Capabilities
See which features this model supports, such as vision, tools, and streaming.
- Tool use
- Can call external tools and APIs
- Supported
- Function calling
- Structured function call interface
- Supported
- Extended thinking
- Shows its chain-of-thought reasoning
- Supported
- Streaming
- Returns tokens as they are generated
- Supported
- Prompt caching
- Reuse repeated prompt prefixes cheaply
- Supported
- Vision
- Accepts image inputs alongside text
- Not supported
- Web search
- Can browse the web during a request
- Not supported
- Batch API
- Process many requests asynchronously
- Not supported
Best for
Jump to a guide or ranking that matches each workload.
Compare GLM 5
Open a side-by-side comparison with one click.
- GLM 5 vs Amazon Titan Text Express
GLM 5 has 382% larger context window
- GLM 5 vs Amazon Titan Text Lite
GLM 5 has 382% larger context window
- GLM 5 vs Amazon Titan Text Premier
GLM 5 has 382% larger context window
- GLM 5 vs Claude Instant
GLM 5 has 102% larger context window
- GLM 5 vs Anthropic Claude
GLM 5 has 102% larger context window
- GLM 5 vs Codellama 34b Instruct
GLM 5 has 4850% larger context window
Frequently asked questions
Short answers about context size and how this model behaves.
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