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Run Open WebUI on Claude Haiku 5.5

by Open WebUIChat appopenwebui.com

Open WebUI is the most popular self-hosted AI interface, an extensible workspace that teams run on their own infrastructure, offline if needed. It connects to OpenAI-compatible APIs out of the box: add a connection with a base URL and key and the models behind it appear for your users. Connect Opper and one admin setting gives your whole deployment 700+ models, with a choice of EU or US inference behind your own walls.

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Connect Open WebUI to Claude Haiku 5.5

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

Get your API key

Where you can run it

Claude Haiku 5.5 runs on the routes below. Route only to EU providers when your data has to stay in Europe.

ProviderRegionZero data retentionTrainingInputOutputCache read
EUNo$0.11$0.55$0.01$0.14 write
EUNo$0.11$0.55$0.01$0.14 write
EUNo$0.11$0.55$0.01$0.14 write
USNo$0.10$0.50$0.01$0.13 write
MultiNo$0.10$0.50$0.01$0.13 write
MultiNo$0.10$0.50$0.01$0.13 write
MultiNo$0.10$0.50$0.01$0.13 write
MultiNo$0.10$0.50$0.01$0.13 write

The model

Run Open WebUI on other models

Step-by-step setup for running Open WebUI on each of these models through Opper.

More apps on Opper

Run Open WebUI on Claude Haiku 5.5

One key, 700+ models, a choice of region, and zero data retention. Switch the model behind your app without changing your workflow.

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