WebAI by Opera

WebAI by Opera: Browser feature providing local AI inference for websites and extensions to process text on device.

WebAI is a local artificial intelligence capability built directly into Opera web browsers. It allows websites and browser extensions to process content locally on the user device rather than sending data to cloud servers. The system includes Prompt, Decision, and Semantic Embeddings APIs for developers to generate text, classify data, and find content relationships. It works with compatible local models and open-weight models running on Opera inference engine. The feature is opt-in, requires manual activation in settings, and runs locally using computer processing power without requiring separate installations or API keys.

WebAI by Opera at a glance

Best for: Software engineer
Runs on: Windows, macOS
Pricing: Free
Released: October 2026
Category: AI productivity tool
Website: blogs.opera.com

Key features

Run local AI models directly in the browser
Process page content locally on user device
Use Prompt, Decision, and Semantic Embeddings APIs
Opt-in activation through browser settings
Support open-weight models via local inference
Build custom browser extensions with local AI

Use it for

Build custom browser extensions with local AI
Color articles based on relevance to a project
Generate quizzes about articles you read
Make saved browser content searchable

Companions

Tools that articles about WebAI by Opera recommend using with it, each with its job.

Ollama — Run open models locally or in the cloud with private prompts
SearXNG — Built-in integration for web-grounded answers.
ComfyUI — Local image and video generation on a node canvas, with every model and parameter in reach
LiteLLM — Per-user keys and routing for clients outside the web UI.
Hermes Agent — Adds agentic workflows on the same local models.
Cloudflare Tunnel — Reach the homelab without opening ports.

Alternatives to WebAI by Opera

Open WebUI — Run AI on your own terms with complete data privacy and self-hosting control.
LocalAI — Runs text, voice, and vision workloads on ordinary hardware with an OpenAI-compatible API.
BrowserOS — Runs entirely locally and lets AI agents use real user logins to complete tasks.
Browser Use Web UI — It supports custom browser integration and persistent sessions.
Foundry Local — Runs AI models locally on device with complete privacy and no Azure subscription.
Moli — A lightweight, structure-first browser engine with low memory usage.
WebBrain — Runs locally or in the cloud with your choice of LLM and zero telemetry.
TheGitAI — Operates active browser sessions without requiring APIs or credential sharing.
Text Generation WebUI — Run local LLMs with multiple backends, multimodal input, and tool calling 100% offline.
WebLLM — Runs high-performance language models directly inside web browsers.
AionUi — Auto-detects and runs local CLI agents like Claude Code and Codex in parallel.
Steel — Run scalable cloud browser sessions with a simple developer API.

All WebAI by Opera alternatives