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GPT-4.5 Codex

GPT-4.5 Codex

software Endorsed by 4 creators Visit website →

An advanced version of OpenAI's Codex model with improved efficiency and speed.

Endorsed by

Lex Fridman Greg Isenberg How I AI Morgan Linton

Topics

ai coding model openai llm language model programming agent +6 more

Used and recommended

These creators personally use this product and recommend it to others

Greg Isenberg uses recommends
"I prefer Opus most of the time for this and Codex for coding."
How I Use Clawdbot to Run My Business and Life 24/7 · ▶ 13:27 · Jan 2026

"Codex is a really good muscle for coding for this. And so set up Codex inside your Cloudbot."

Clawdbot/OpenClaw Clearly Explained (and how to use it) · Jan 2026

Used by

These creators have mentioned using this product

Lex Fridman uses
"And I just typed, 'Convert this and this part to Zig,' and then let Codex run off"
OpenClaw: The Viral AI Agent that Broke the Internet - Peter Steinberger | Le... · ▶ 10:16 · Feb 2026
How I AI uses
"the new model GPT 5.3 Codex. Try saying that five times fast."
Claude Opus 4.6 vs GPT-5.3 Codex: How I shipped 93,000 lines of code in 5 days · ▶ 0:22 · Feb 2026
Morgan Linton uses
"GPT 5.3 Codex just came out. Morgan, help me understand by the end of this episode"
Claude Opus 4.6 vs GPT-5.3 Codex · ▶ 1:29 · Feb 2026

Also mentioned (6)

Casual references without a clear endorsement
Tom Bilyeu mentioned "Get ready for Deep Seek 4, 20x over current US company LLM, even Opus 4.6 and Codex." ▶ 1:51:21
Cal Newport mentioned "Then on February 5th, two major AI labs released new models on the same day. GPT-5.3 Codex from O..." ▶ 36:46
Satya Nadella mentioned "I think it was GPT, you know there's a Codex model back in the day it was pre-GPT-3.5 that's when..." ▶ 3:10
Ross Mike mentioned "when we think of building applications using AI, using some sort of agent like cloud code or open..." ▶ 1:29
Greg Isenberg mentioned "we have Codex now officially support skills. Skills are reusable bundles of instructions, scripts..." ▶ 0:57