GPT-5.3-Codex-Spark vs GLM-4.7
OpenAI GPT-5.3-Codex-Spark | Z.ai GLM-4.7 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | Z.ai |
| Release date | Feb 12 2026 | Dec 22 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Context window | 128k | 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. | — | 73.8% |
Agentic terminal coding Terminal-Bench 2.0Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? (Version 2.0 of the test.) Higher is better. | — | 41% |
Web browsing BrowseCompCan the AI browse the web and track down hard-to-find answers? Higher is better. | — | 52% |
Multidisciplinary reasoning Humanity's Last Exam · no toolsHumanity's Last Exam — extremely hard expert questions across many subjects, written so you can't just look up the answer. “No tools” means the AI answers on its own. Higher is better. | — | 24.8% |
Multidisciplinary reasoning Humanity's Last Exam · with toolsHumanity's Last Exam — extremely hard expert questions across many subjects. “With tools” means the AI is allowed to search the web or run code while answering. Higher is better. | — | 42.8% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 85.7% |
| Timeline | ||
| Release gap | GLM-4.7 shipped 52 days before GPT-5.3-Codex-Spark | |
Which is better: GPT-5.3-Codex-Spark or GLM-4.7?
GPT-5.3-Codex-Spark and GLM-4.7 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GLM-4.7 shipped 52 days before GPT-5.3-Codex-Spark, so benchmark comparisons should account for the intervening progress.
Context windows are 128k (GPT-5.3-Codex-Spark) vs 128k (GLM-4.7). GPT-5.3-Codex-Spark is proprietary, while GLM-4.7 is open weight.
Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and GLM-4.7 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-4.7 was released by Z.ai on Dec 22 2025.
GPT-5.3-Codex-Spark has a 128k context window; GLM-4.7 has 128k.
GPT-5.3-Codex-Spark is a proprietary model released by OpenAI. GLM-4.7 is an open weight model released by Z.ai.