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OpenAI released GPT-5.3-Codex-Spark, a lightweight coding model delivering 1,000+ tokens per second through a Cerebras partnership. GitHub launched Agentic Workflows for repository automation using plain Markdown descriptions. Google added Automated Reviews to Conductor in Gemini CLI and upgraded Gemini 3 Deep Think mode for improved reasoning. GitHub Copilot testing for .NET reached general availability in Visual Studio 2026. Anthropic raised $30 billion in Series G funding at a $380 billion valuation, with run-rate revenue hitting $14 billion.

This week in AI updates: GPT-5.3-Codex-Spark, GitHub Agentic Workflows, and more (February 13, 2026)