Side-by-Side
Compare AI Tools
Evaluate features, pricing, platforms, and real user ratings side-by-side to make the right choice.
2 / 4 Tools
| Attribute | ChatGPT by OpenAI | FastChat by LMSYS Org (UC Berkeley) |
|---|---|---|
| Category | AI Chat Subcategory: Conversational Assistant | Other AI Tools |
| Rating & Reviews | ★New / 5.0 0 verified reviews Weighted score: 0.00 | ★New / 5.0 0 verified reviews Weighted score: 0.00 |
| Pricing Model | freemium | free |
| Starting Price | $20/mo Free tier with GPT-4o mini; Plus subscription at $20/month for frontier reasoning and priority features. | Free 100% free open-source software (Apache 2.0). |
| Platforms | WebiOSAndroidmacOSWindows | PythonLinuxDocker |
| AI Capabilities | Natural Language UnderstandingComplex ReasoningVoice InteractionCode GenerationDocument Analysis | Chatbot Arena Elo Rating EngineDistributed Multi-Model ServingOpenAI-Compatible REST APIsVicuna Model Training Scripts |
| Overview | OpenAI conversational assistant featuring GPT-4o, reasoning models o1 & o3-mini, Advanced Voice mode, and deep canvas workspace. | Open platform for training, serving, and evaluating LLM chatbots, powering LMSYS Chatbot Arena. |
| Tags | chatassistantopenaiproductivitymultimodal | lmsysevaluationservingopen-source |
