- GPT-5-CODEX promises higher performance and success rates
- It’s included in Plus, Pro, Business, EDU and Enterprise -Users
- The model can use 93.7% fewer symbols on easy tasks
Openai has shared more details about GPT-5-Codex, a custom-built version of GPT-5 specifically optimized for agent coding and software technique in the real world, and we are in treat when it comes to reliability and performance.
The Chatgpt manufacturer claimed that a Sweden-Verified Benchmark Success rate of 74.5%, with the refactoring performance improving to 51.3% (up from 33.9% in GPT-5).
Like the GPT-5, the GPT-5-Codex will dynamically adjust the reasoning time for faster performance on small tasks and more extensive reasoning of complex, and it has already been tested that works independently for over seven hours on large refactors.
GPT-5-CODEX is a big upgrade
Openai says GPT-5-Codex is strong in code reviews and catches critical bugs before release, but it can also handle frontend work with visual inspection, screens and mobile web design improvements.
The news comes only a few months after Openai launched the Codex Cli (in April) and Codex Web (in May) before combining them in a “Unified … experience associated with … Chatgpt” in early September.
It is included in Chatgpt Plus, Pro, Business, EDU and Enterprise plans and works across Terminal, Ides, on the Internet, in GitHub and on the iOS app.
The company also detailed how GPT-5-Codex uses 93.7% fewer tokens than GPT-5 on light interactions, but it will also spend twice as long reasoning, editing, testing and itering if needed.
Equally important for developers, the tool will provide logs, quotes and test results for transparency. Developers who use Codex Cli via API key also get API access to GPT-5-Codex “Soon.”
“Codex becomes the coding partner we have always imagined – one that is faster, more reliable and deeply integrated into the tools you are already using,” Openai wrote.
Plus, EDU and business plans have enough to cover “a few focused coding sessions every week” – users who need more need to upgrade to Pro to “a full work week across multiple projects.” Enterprise accounts pay for what they use via a shared credit pool.
