gpt‑5.1‑codex‑max just got added to API after having been added to Codex 2 weeks ago. I benchmarked it. Here's what I found.
GPT‑5.1‑Codex‑Max
Just released to API
8/11 C‑
versus
GPT‑5.1‑Codex
Previous version
7/11 D
Where It Lands
The Takeaway
Max scores one point better than regular Codex. That's something. But it's still worse than Gemini 3 Pro, Claude Opus 4.5, and DeepSeek v3.2. It's only on par with Claude Sonnet 4.5.
Current Lynchmark Ranking
1
Google Gemini 3 Pro (Temperature: 0.35)
2
Anthropic Claude Opus 4.5
3
DeepSeek‑v3.2
4
GPT‑5.1‑Codex‑Max (new)
5
Claude Sonnet 4.5
The reality check: Even with this release, OpenAI is still far behind. This shows exactly why they declared "code red." The gap is real. They're not closing it fast enough.
What's coming: The rumors say OpenAI's upcoming model (codenamed "Garlic") arrives next week. The pressure is on. The anticipation is building. I'll benchmark it the moment it drops.
— Lynchmark