Best AI Models April 2026: GPT-5.5, Claude & Gemini Compared
Compare the latest AI models side-by-side with open-source notebooks...
Deep Dive
For developers wanting hands-on experience, the gen-ai-experiments cookbook repository provides practical notebooks for building with Claude, GPT, Gemini, and DeepSeek, including multi-model comparison setups you can run today.
Key Points
- GPT-5.5 offers a 1M token context window at 45% lower cost than GPT-5
- Claude Opus 3.5 leads in adversarial safety benchmarks with 98% refusal accuracy
- DeepSeek-V4 is fully open-weight and outperforms closed models on math coding tasks
Why It Matters
Developers can now easily benchmark top models side-by-side, reducing guesswork when choosing AI for production systems.