Best open-weight chat model
European AI lab producing frontier open-weight models deployable on your own infrastructure with no usage fees and no data leaving your environment. Fast, efficient, and competitive with much larger proprietary models on most benchmarks. The default choice for teams that want serious AI capability without vendor lock-in or compliance headaches.
Pricing plans
| Rating | 4.3 | 4.7 | 4.5 | 4.5 |
| Reviews | 86 | 5,180 | 252 | 122 |
| Price | Free / API usage-based | Free / $20/mo Plus | Free / $20/mo Pro | Free / $20/mo Pro |
| Free tier | Free | Free | Free | Free |
| API access | ✓ | ✓ | ✗ | ✓ |
| Watermark | No | No | No | No |
The tool that made AI assistants mainstream — and still the most broadly capable for everyday use. Best-in-class for general knowledge, coding, content drafting, data analysis, and image generation via DALL·E 3. Four years of model improvement and a vast plugin and GPT ecosystem give it a feature lead that's hard to catch up to.
Search with AI that actually cites its sources. Every answer comes with numbered references you can click through — no more wondering where the statistic came from or whether it was invented. Best for research, fact-checking, and staying current on fast-moving topics where accuracy matters more than creative flair.
Anthropic's AI assistant — the one most often cited by professionals who care about depth. Exceptional at long-document analysis, nuanced conversation, research synthesis, and tasks requiring genuine reasoning rather than pattern-matched confidence. Widely used by writers, analysts, lawyers, and engineers who need an assistant that's careful, not just fast.