GLM 5.3 Prime
by Z.aitext->text1 endpoint
Overview
GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token context window and up to 128K output tokens, and targets coding and agentic workloads, including long-horizon multi-turn agent orchestration, real-time conversation, and streaming code generation.
Reasoning is always on and cannot be disabled. Reasoning efforts low, high, and max are supported; max is the default.
Capabilities
Text generation
Tool use / Function calling
Structured output
Extended reasoning
Prompt caching
Long context
Top-P sampling
Stop sequences
Deterministic seed
Log probabilities
Modalities
Input
Text
Output
Text
Technical Specifications
Context Window
1M tokens
Max Output
131.1K tokens
Tokenizer
Other
Uptime (24h)
10000.0%
Supported Parameters
frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstoptemperaturetool_choicetoolstop_ktop_logprobstop_p
Pricing
Per 1M tokens
Input$2.80
Output$8.80
Cache read$0.56
Added
September 23, 2026
Last synced 10/23/2026