AI Development Tools launch history

GPT-5.3 Codex is now available in Cursor! It's noticeably faster than 5.2 and is now the preferred model for many of our engineers.

Composer 1.5 is now available. We’ve found it to strike a strong balance between intelligence and speed. https://t.co/jK92KCL5ku

📣 @OpenAIDevs GPT-5.3-Codex is now generally available and rolling out in GitHub Copilot. Early testing shows ➡️ It reaches new high scores on benchmarks we use to evaluate coding, agentic, and real-world capabilities ➡️ 25% faster performance than GPT-5.2-Codex on agentic

MiniMax M2.5 just dropped. It's already on Fireworks. Excited to announce Fireworks AI as the day-0 launch partner for the brand new @MiniMax M2.5! M2.5 is built for production agents at frontier performance at one-tenth the cost: 🟣Production-ready coding across the full dev https://t.co/Y42WI4Qqrj

The ocean is a “soundscape” of mystery. To protect underwater species, we need to identify them at scale. Recently, we launched Perch 2.0, which excels at marine validation tasks - despite having no underwater audio in training. https://t.co/Z16r8njDZK