GPT-5.3

OpenAI launches GPT-5.3 Instant, a new model update targeting user experience improvements such as reducing condescending tone, preachy disclaimers, and unsolicited emotional reassurances in ChatGPT responses.

Watchdog alleges OpenAI violated California AI safety law with GPT-5.3-Codex release, citing inadequate safeguards for high cybersecurity risk models.

OpenAI unveils GPT-5.3-Codex-Spark, delivering over 1,000 tokens per second through partnership with Cerebras for ultra-low latency AI coding assistance.