# OpenAI's Codex: how AI models rank it, November 2026

Gane Index, November 2026 Edition. Named in 4 judge labels across 2 categories by 3 of 14 models. Page: https://www.gane.ai/index/it/vendors/openai-s-codex

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| [AI coding assistants](https://www.gane.ai/index/it/developer/ai-coding-assistants/index.md) | 0% | 54 | 50% | 2 |
| [AI security platforms](https://www.gane.ai/index/it/security/ai-security-platforms/index.md) | 0% | 200 | 100% | 2 |

## What the models said for it

- "OpenAI's Codex CLI focus on massive context windows (e.g., 1M tokens)" (Qwen 3.7 Flash, AI coding)

## And against it

- "found to have similar embedded browser flaws that allowed for file reading or code execution" (GLM 4.7 FlashX, AI security)
- "Agentic tools that can read/write files and run commands without sandboxing are higher-risk." (DeepSeek V4 Flash, AI coding)
- "OpenAI's Codex — remote code execution vulnerabilities unpatched" (DeepSeek V4 Flash, AI security)

## By model

| Model | First choice | Alternative | Mention | Warning | Labels |
|---|---|---|---|---|---|
| Claude Haiku 4.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-5.4 mini | 0 | 0 | 0 | 0 | 0 |
| Gemini 3.5 Flash | 0 | 0 | 0 | 0 | 0 |
| Perplexity Sonar | 0 | 0 | 0 | 0 | 0 |
| Grok 4.20 | 0 | 0 | 0 | 0 | 0 |
| Mistral Small | 0 | 0 | 0 | 0 | 0 |
| DeepSeek V4 Flash | 0 | 0 | 0 | 2 | 2 |
| Llama 4 Maverick | 0 | 0 | 0 | 0 | 0 |
| Qwen 3.7 Flash | 0 | 1 | 0 | 0 | 1 |
| Kimi K2 | 0 | 0 | 0 | 0 | 0 |
| GLM 4.7 FlashX | 0 | 0 | 0 | 1 | 1 |
| MiniMax M2.5 | 0 | 0 | 0 | 0 | 0 |
| GPT-6 Luna | 0 | 0 | 0 | 0 | 0 |
| Muse Glimmer 30B | 0 | 0 | 0 | 0 | 0 |

## Sources returned with these answers

The sites and pages cited by the answers that named OpenAI's Codex, from 5 of the 5 answers that named it (only the models that return a source list).

### Domains cited

- securityboulevard.com: 3
- theregister.com: 3
- bsi.bund.de: 2
- checkpoint.com: 2
- dl.acm.org: 2
- helpnetsecurity.com: 2
- ibm.com: 2
- reuters.com: 2
- agileblue.com: 1
- ai-tldr.dev: 1

### Pages cited

- https://theregister.com/security/2026/10/29/researchers-find-bugs-in-5-ai-developer-tools-with-openai-and-microsoft-flaws-still-unpatched/5306508: 3
- https://bsi.bund.de/SharedDocs/Downloads/EN/BSI/KI/ANSSI_BSI_AI_Coding_Assistants.pdf: 2
- https://checkpoint.com/cyber-hub/tools-vendors/best-ai-security-companies-in-2026: 2
- https://ibm.com/think/insights/top-ai-code-security-solutions: 2
- https://reuters.com/legal/litigation/ai-discovered-bugs-may-soon-trigger-fresh-disruptions-cyber-experts-say-2026-10-23: 2
- https://agileblue.com/resource/ai-coding-assistant-security-risks: 1
- https://ai-tldr.dev/learn/ai-coding-tools/ai-coding-basics/when-not-to-use-ai-coding: 1
- https://ai.gov.au/staying-safe-and-responsible/know-risks/data-security: 1

## Record

- Method: https://www.gane.ai/index/it/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/it.