Open-Source ChatGPT with Open WebUI
Run your own AI chat interface with full data control. No vendor lock-in. No monthly subscriptions to OpenAI. Connect any LLM—local Ollama, GPT, Claude, Mistral—in one unified interface. Opsily manages the infrastructure. You own the data.
What is Open-Source ChatGPT?
Open-source ChatGPT is not ChatGPT at all: it's a fundamentally different way to run AI chat. Instead of sending your data to OpenAI's servers, you deploy your own AI interface and connect it to any model: Ollama (runs locally), OpenAI's API, Claude, Mistral, DeepSeek, Llama, or your own fine-tuned models.
Open WebUI is the most popular implementation. With 152.3K GitHub stars and 392M+ downloads: the de facto standard for teams that refuse to bet their AI strategy on a single vendor.
Why People Choose Open Source Over ChatGPT
Data stays yours. ChatGPT Plus costs $20/month and trains on your conversations unless you opt out of training. Open WebUI stores everything in your own infrastructure: EU servers, if you prefer. Your conversations never train anyone's model but your own.
No per-seat costs. ChatGPT Plus is $20/user/month. Teams of ten pay $200/month forever. Open WebUI scales your cost with infrastructure, not seats: unlimited team members on one deployment.
Control over models. ChatGPT locks you into OpenAI's models. Open WebUI lets you swap models in one click: use GPT for reasoning, Claude for code review, local Mistral for sensitive data. You're never locked in.
Compliance by design. Open WebUI runs in your infrastructure. EU companies can deploy in German data centers. HIPAA-bound teams can air-gap it entirely. ChatGPT's enterprise tier requires lengthy vendor review. Open WebUI is compliant by architecture.
The Trade-Off
Open-source means you (or a team like Opsily) manage infrastructure. That's why managed hosting exists. The freedom to own your data comes with responsibility. Opsily handles the ops—infrastructure, updates, backups, monitoring—so you get the best of both: full control without the complexity.
Why Opsily for Open WebUI
Managed open-source ChatGPT hosting that respects your independence.
Fully Managed Open-Source ChatGPT Hosting
EU Data Residency: Your conversations stay in German data centers. GDPR-compliant by default. No data leaving EU borders. Critical for regulated industries, EU teams, and privacy-first organizations. Opsily is GDPR compliant and offers data residency controls no cloud ChatGPT alternative can match.
Zero Ops Infrastructure
Opsily handles Docker, Kubernetes, SSL, backups, monitoring, and security patching. No server bills surprise you. No maintenance windows wake you at midnight. Log in, configure your models, invite your team. Infrastructure work is done.
Multi-Model Flexibility
Connect Ollama for local inference, OpenAI, Anthropic, Mistral, or proprietary models via API. Switch models in-chat without downtime. No retraining. No migration hassles. Opsily stays out of your model choices—they're yours to make.
Built for teams who need reliability
Everything. No Tiers.
Open WebUI on Opsily includes all features. No premium upsells. No feature gates. Scale without paying more per seat.
How to Deploy Open WebUI on Opsily
Three steps to a production-ready chat platform. No DevOps required.
Sign up, choose a plan, select EU hosting. We provision your instance in minutes.
Point to Ollama running locally, or link OpenAI/Claude/Mistral API keys. One click.
Your chat interface is live. Set roles, invite team members, enable SSO for enterprise auth.
Sign up, choose a plan, select EU hosting. We provision your instance in minutes.
Point to Ollama running locally, or link OpenAI/Claude/Mistral API keys. One click.
Your chat interface is live. Set roles, invite team members, enable SSO for enterprise auth.
Create Account & Configure
Sign up, choose a plan, select EU hosting. We provision your instance in minutes.
Connect Your Models
Point to Ollama running locally, or link OpenAI/Claude/Mistral API keys. One click.
Deploy and Invite Team
Your chat interface is live. Set roles, invite team members, enable SSO for enterprise auth.
Customize (Optional)
White-label branding, custom plugins, RAG documents, workflows. Opsily handles infrastructure; you control the experience.
Transparent, Predictable Pricing
Choose the server size that fits your team. All plans include GDPR-compliant German hosting, daily backups, SSL, 24/7 monitoring, and unlimited team members.
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Trust and Security
Open-source transparency meets enterprise rigor.
GDPR Compliant
Data residency in German data centers. Full EU data protection. No data transfers outside EU.
Open Source
152.3K GitHub stars. 18,391+ commits. Auditable code. No closed-source lock-in. Community-vetted security.
EU Hosting
Your conversations stay in German data centers. GDPR-compliant by design. Your data never leaves the EU.
Automated Backups
Daily encrypted backups to S3-compatible storage. One-click restoration. You own your data.
Enterprise Auth
SSO via LDAP, Active Directory, SAML. Role-based access control. Audit logs. Built for teams.
Frequently Asked Questions
Open-source ChatGPT refers to self-hosted AI chat interfaces like Open WebUI that run on your infrastructure instead of OpenAI's servers. ChatGPT Plus is a cloud service: you send data to OpenAI, pay $20/month per user, and OpenAI trains on your conversations by default. Open WebUI is free, open-source software. You deploy it yourself (or have Opsily manage it), your data stays local or in your chosen infrastructure, and you can connect any LLM model. No per-user costs. No vendor lock-in. Open WebUI has 152.3K GitHub stars and 392M+ downloads—the de facto standard for teams wanting full control.
Your AI. Your Control. Your Terms.
Stop paying per seat. Stop sending data to third parties. Start with Open WebUI on Opsily.