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Z.ai · Language model
GLM 5.3 Flash
z-ai/glm-5.3-flash- Language
GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...
Specifications
- Context window
- 1,310,720 tokens
- Max output
- 943,717 tokens
- Input
- text, image, video
- Output
- text
- Reasoning effort
- max, high, low (always on)
- Tokenizer
- Other
Supported parameters
Accepted by the model and forwarded as-is by the gateway.
- frequency_penalty
- 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
Use it
POST /api/v1/chat/completions · MCP chat · full reference
curl https://omnirail.org/api/v1/chat/completions \
-H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
-d '{"model":"z-ai/glm-5.3-flash","messages":[{"role":"user","content":"Hello"}],"max_tokens":300}'