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-ASR-2512Z.AIReleased December 10, 2025
GLM-ASR-2512
High-accuracy automatic speech recognition model delivering a Character Error Rate as low as 0.0717 with user-defined vocabulary support.
speech-to-textProprietary API$0.0024 / min audio (0.0717 CER)Context: 32.768K (32,768 tokens)
Technical Specifications
Architecture Type
High-Accuracy Multilingual ASR Transformer
Total Parameters
Speech Foundation Scale
Context Window
32.768K (32,768 tokens)
Max Output Tokens
4.096K (4,096 tokens)
Knowledge Cutoff
December 2025
Supported Modalities
audio, text
License & Access
Z.AI Terms of Service
Benchmark Evaluations
Word Error Rate
0.048
Character Error Rate
0.0717
Deep Architectural Overview
GLM-ASR-2512 is Z.AI’s production speech-to-text model. Engineered for complex acoustic environments, regional accents, and specialized domain terminology, it bills at roughly $0.0024 per minute of audio.
Strengths & Considerations
Core Strengths
- Ultra-low CER of 0.0717
- User-defined custom vocabularies and terminology dictionaries
- Extremely low cost (~$0.0024/minute)
Known Limitations
- Audio input only; text output transcription only
Token & API Pricing
Input Tokens (1M)$0.03
Output Tokens (1M)$0.03
Pricing is verified directly against Z.AI's developer documentation and API rate sheets.
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