The Orchestrator › Models › Z.ai
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...
Specifications
| Provider | Z.ai |
| Model ID | z-ai/glm-5.3 |
| Context window | 1.0M tokens (1,048,576) |
| Modalities | text → text |
| Tokenizer | Other |
| Router sources | OpenRouter, TrustedRouter, Vercel AI Gateway, Cloudflare |
| Released | 2026-08-18 |
| Tracked since | 2026-11-14 |
| Popularity | #5 by usage · peak 21.9% spend share in an OpenRouter category |
| Reasoning | Mandatory |
Pricing (per million tokens)
| Variant | Source | API ID | Input | Output | Context |
|---|---|---|---|---|---|
| standard | OpenRouter | z-ai/glm-5.3 | $0.084 | $3.60 | 1.0M |
| batch | OpenRouter | z-ai/glm-5.3:batch | $0.45 | $2.00 | 1.0M |
| standard | TrustedRouter | z-ai/glm-5.3 | $0.19 | $1.58 | 1.0M |
| standard | Vercel AI Gateway | z-ai/glm-5.3 | $1.40 | $4.40 | 1M |
| standard | Cloudflare | z-ai/glm-5.3 | $1.40 | $4.40 | — |
Recorded price history
| Date | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| 2026-11-14 | $1.40 | $4.40 | — |
| 2026-11-14 | $1.40 | $4.40 | 1M |
| 2026-11-14 | $0.19 | $1.58 | 1.0M |
| 2026-11-14 | $0.084 | $3.60 | 1.0M |
Capabilities
Agentic tool useStructured outputsReasoning (always on)1M+ context windowControllable reasoningNo content storage (attested)Zero data retention
Trust flags come from TrustedRouter's per-provider attestations.
Supported parameters
frequency_penalty, include_reasoning, logit_bias, logprobs, max_tokens, min_p, parallel_tool_calls, presence_penalty, reasoning, reasoning_effort, repetition_penalty, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_logprobs, top_p