GPT-5.2 and GPT-5.2-Codex are now 40% faster
twitter.com
February 4, 2026
1 min read
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45/100
Summary
GPT-5.2 and GPT-5.2-Codex are now 40% faster due to optimizations in the inference stack for all API customers. The models maintain the same architecture and weights while offering lower latency.
Key Takeaways
- GPT-5.2 and GPT-5.2-Codex are now 40% faster than previous versions.
- OpenAI has optimized its inference stack for all API customers, resulting in lower latency.
- The model architecture and weights remain unchanged despite the performance improvements.
Community Sentiment
Positives
- The 40% faster inference in GPT-5.2 significantly boosts productivity, with users reporting up to 3x improvement in their workflow.
- OpenAI's introduction of subagents and a better multi-agent interface enhances the usability of Codex, making it more effective for developers.
Concerns
- There are concerns that OpenAI may sacrifice model quality for speed, leading to skepticism about the reliability of their performance claims.
- The perception that initial model performance is artificially inflated raises doubts about the long-term effectiveness of the new features.
