Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Pinokio | not listed | ? | Browser extensions |
 Sider | not listed | yes | Browser extensions |
 RegexAI | not listed | yes | Browser extensions |
 MaxAI | 12 USD/mo | yes | Browser extensions |
 HARPA AI | 55.4 PLN/mo | ? | Browser extensions |
 Gemini in Chrome | 97,99 PLN/mo | ? | Browser extensions |
 Grok | 30 USD/mo | yes | Chatbots & AI assistants |
 LochBot | not listed | yes | Browser extensions |
Each alternative in short
1. Sider
AI sidebar and browser agent that chats with multiple AI models, summarizes web pages, and automates browser tasks.
Yes, there is a free plan. The pricing page lists a free tier for translation (basic model) and the Chrome extension itself; the exact free credit allowance is not stated in the text.
2. RegexAI
Builds regular expressions from plain-English descriptions and tests them live, for developers who write or debug regex.
Yes, there is a free plan. Free to use, no signup, according to the page.
3. MaxAI
Browser extension that gives an AI assistant sidebar for reading, writing, summarizing and translating content on any webpage.
Yes, there is a free plan. Unlimited Free chat with the fast free AI model, 3 Pro chats per day, limited file uploads, basic browser features.
4. HARPA AI
Chrome extension giving access to many AI models on any web page, for summarizing, writing, research and web automation.
The vendor does not state this clearly on the homepage or pricing page.
5. Gemini in Chrome
AI browsing assistant built into Google Chrome that answers questions about open tabs, summarizes pages and videos, and can act on web tasks.
The vendor does not state this clearly on the homepage or pricing page.
6. Grok
Frontier AI models from SpaceXAI for chat, code, voice, images and video, available via apps, X and a developer API.
Yes, there is a free plan. Free plan gives access to Grok within generous limits, including voice mode, connectors and real-time web and X search, with limited Grok Bot and Expert features.
7. LochBot
Free browser-based checker that scores a chatbot's system prompt against 31 prompt injection attack patterns for security engineers and developers.
Yes, there is a free plan. The checker is free, including JSON export.
FAQ
What is the best alternative to Pinokio?
The most popular option in the same category is Sider. See the comparison table above.