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AI Models Compared (Mar 2026) Tools

AI Timeline

70+ model releases from 10+ companies across 6 countries, Nov 2022 through March 2026.

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About this timeline

I started tracking AI model releases in late 2022 because I kept losing track of what came out when. Was Claude 3.5 Sonnet before or after GPT-4o? Did DeepSeek V3 drop before or after Gemini 2.0 Flash? This page is my answer to that problem - and now yours.

Every entry includes the release month, the company behind it, and a short description of what made each model notable. The pace has been wild. In 2023 we saw 17 major releases. In 2024, another 12. In 2025, that jumped to 15. And we're already at 7 releases in just the first three months of 2026.

For a deeper look at how the current models actually perform against each other, check out my AI models comparison for March 2026. I've also written about Claude Opus 4, Windsurf vs Cursor, Devin vs Claude Code, and running local models with Ollama. If you're building with AI, check out my guides on RAG from scratch and building AI agents.

This timeline gets updated as new models drop. Last update: March 2026.