OpenAI12 Feb 2026 GPT-5.3-Codex-Spark Announced on openai.com Benchmark resultsBenchmarkScoreSource checkTerminal-Bench 2.058.4%SourcesReported by OpenAIIntroducing GPT-5.3-Codex-Sparkopenai.com ยท 12 Feb 2026 Related events12 Feb 2026OpenAI launches GPT-5.3-Codex-SparkLaunch event All models