GLM-5 vs GPT-5.3 Codex: Specs & Benchmark Comparison
| Characteristic | GLM-5 | GPT-5.3 Codex |
|---|---|---|
| Company | Zhipu AI | OpenAI |
| Release Date | February 10, 2026 | February 5, 2026 |
| Parameters | 744B | — |
| Multimodal | No | Yes |
| Context (input) | 200K | 400K |
| Context (output) | 128K | 128K |
| Input Price / 1M | — | $1.75 |
| Output Price / 1M | $0.00 | $14.00 |
| Average Score | 0.7 | 0.7 |
| Benchmarks | ||
| Terminal-Bench 2.0 | 0.6 | 0.8 |
Visual Benchmark Comparison
GLM-5
GPT-5.3 Codex
Terminal-Bench 2.00.6 vs 0.8
0.6
0.8
Verdict
GPT-5.3 Codex leads in 1 out of 3 comparison categories.
Overall Performance
Both models show comparable average scores: GLM-5 — 0.7, GPT-5.3 Codex — 0.7.
Context Window
GPT-5.3 Codex supports a larger context: 400K vs 200K tokens.
Recency
Both models were released around the same time: 2/10/2026 and 2/5/2026.
More About These Models
Related Comparisons
The GLM-5 and GPT-5.3 Codex comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GLM-5 or GPT-5.3 Codex page. See also the complete list of AI model comparisons.