GPT-5.3-Codex-Spark vs GLM-4.5-Air
OpenAI GPT-5.3-Codex-Spark | Z.ai GLM-4.5-Air | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Feb 12 2026 | Jul 28 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 106B |
Context window | 128k | — |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 59.8% |
| Timeline | ||
| Release gap | GLM-4.5-Air shipped 199 days before GPT-5.3-Codex-Spark | |
Which is better: GPT-5.3-Codex-Spark or GLM-4.5-Air?
GPT-5.3-Codex-Spark and GLM-4.5-Air don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4.5-Air shipped 199 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
GPT-5.3-Codex-Spark is proprietary, while GLM-4.5-Air is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and GLM-4.5-Air don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5.3-Codex-Spark was released by OpenAI on Feb 12 2026.
GLM-4.5-Air was released by Z.ai on Jul 28 2025.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. GLM-4.5-Air is an open weight model released by Z.ai.
Other comparisons
GPT-5.3-Codex-Spark vs Claude Fable 5GLM-4.5-Air vs Claude Fable 5GPT-5.3-Codex-Spark vs Gemini OmniGLM-4.5-Air vs Gemini OmniGPT-5.3-Codex-Spark vs Muse SparkGLM-4.5-Air vs Muse SparkGPT-5.3-Codex-Spark vs Grok 4.3 BetaGLM-4.5-Air vs Grok 4.3 BetaGPT-5.3-Codex-Spark vs DeepSeek-V4-ProGLM-4.5-Air vs DeepSeek-V4-ProGPT-5.3-Codex-Spark vs Mistral Medium 3.5GLM-4.5-Air vs Mistral Medium 3.5