Big-AGI review
Compare model responses side by side, with control over models, tools, and API keys.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Big-AGI is a web-based AI workspace for people who want to compare models and manage how they respond. It connects users’ own API keys to cloud and local AI models, with features for AI experts, developers, researchers, professionals, and teams. Multi-model chats and parallel Beam runs let users compare outputs; personas can carry instructions, documents, images, and memory. It also supports file drops, PDF extraction, web search through supported providers, and image generation or editing through supported models.
Its breadth is most useful when model comparison is central to the work. Users can merge responses across models, adjust model parameters and tools, and inspect requests for token and cost details. Big-AGI lists integrations with providers including OpenAI, Anthropic, Google Gemini, Meta, Mistral, Perplexity, and DeepSeek. Search and image capabilities depend on supported models and providers. Local-first storage and self-hosting under the MIT License may suit users who want deployment and data-handling choices, while the product is listed as web-based.
Big-AGI has a Free plan at $0 per month with advanced multi-model features, personas, and UI, hosted by Big-AGI. Pro costs $9 per month or $108 per year and adds cloud backup of personas and chats, multi-device sync, email support from the builder, and priority access to new features. Bring your own API keys: charges from model providers are separate from the subscription. Choose Big-AGI if comparing responses and controlling model connections matter more than a single-assistant workflow. If you want provider usage included in a subscription or listed mobile apps, this may not fit.
Big-AGI pros and cons
- Where it wins
- Run multiple models in parallel and merge their responses.
- Attach documents and images to personas, and extract text from PDFs.
- Inspect AI requests with token and cost details.
- Where it doesn't
- Requires your own API keys; provider usage charges are separate.
- Cloud backup, multi-device sync, and email support require Pro.
- The listed platform is web; no mobile apps are listed.
Big-AGI fact sheet, pricing and score →
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