GPT Audio vs GLM 5.2
Detailed technical comparison between GPT Audio (OpenAI) and GLM 5.2 (Zhipu AI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
GLM 5.2
1,048,576 tokensTie
Equal CapabilityTie
Equal SpeedGLM 5.2
$0.80 / MTokGPT Audio
The gpt-audio model is OpenAI's first generally available audio model. The new snapshot features an upgraded decoder for more natural sounding voices and maintains better voice consistency. Audio is priced...
GLM 5.2
GLM 5.2 is a large-scale reasoning model from Z.ai. It supports text input and output with a 1M-token context window, and is suited for long-horizon agent workflows, project-level software engineering,...
Technical Specifications
🏆 = Superior Spec| Specification | GPT Audio | GLM 5.2 |
|---|---|---|
| Provider | OpenAI | Zhipu AI |
| Context Window | 128,000 tokens | 1,048,576 tokens🏆 |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2026-01-19 | 2026-06-16 |
API Pricing Comparison
Input Price per Million Tokens
GPT Audio
$2.50
GLM 5.2
$0.80
Output Price per Million Tokens
GPT Audio
$10.00
GLM 5.2
$2.50
💡 Cost Ratio: GLM 5.2 is 3.1x cheaper per input token than GPT Audio.
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Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
GPT Audio Quirks & Gotchas
No developer gotchas reported.
GLM 5.2 Quirks & Gotchas
No developer gotchas reported.
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