Latest AI Models & Rumors: GPT-5.3 Codex Spark 🚀

OpenAI released GPT‑5.3 Codex Spark, a Cerebra‑served coding model that delivers roughly 1,000 tokens per second and enables near‑instant code edits while trading off long‑horizon reasoning and multimodal inputs. DeepMind upgraded DeepThink with the Althea agent to autonomously generate and verify mathematical proofs and to scaffold research workflows in physics and computer science. Anthropic closed a $30 billion financing at a $380 billion post‑money valuation amid dramatic ARR growth, rolled Claude CoWork out to Windows, and faced intensified policy scrutiny.

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