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smart_toyAI/PROMPT ENGINEERING

Quoting Thibault Sottiaux

sourceSimon Willison
calendar_todayFebruary 21, 2026
schedule1 min read
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EXECUTIVE SUMMARY

OpenAI Accelerates GPT-5.3-Codex-Spark Performance by 30%

Summary

OpenAI has significantly improved the performance of its GPT-5.3-Codex-Spark model, achieving a speed increase of 30%. The model is now capable of processing over 1200 tokens per second.

Key Points

  • OpenAI has released an enhanced version of its language model, GPT-5.3-Codex-Spark.
  • The new version is approximately 30% faster than its predecessor.
  • It can now serve at a rate of over 1200 tokens per second.
  • This improvement is crucial for applications requiring high-speed processing of natural language.
  • The advancements are part of ongoing efforts to enhance large language models (LLMs).
  • Thibault Sottiaux, a representative from OpenAI, announced these updates.

Analysis

The performance enhancement of GPT-5.3-Codex-Spark is significant for IT professionals, particularly those involved in AI and machine learning. A faster model can lead to improved user experiences in applications that rely on natural language processing, making it a valuable tool for developers and businesses looking to integrate AI solutions.

Conclusion

IT professionals should consider leveraging the improved capabilities of GPT-5.3-Codex-Spark in their applications to enhance performance and user engagement. Staying updated on advancements in AI models will be crucial for maintaining competitive advantages in technology-driven markets.