A friendly Vietnamese AI study assistant for homework, images and everyday questions
GradeGap records 0 monthly visits with — month-over-month growth and Freemium pricing. OpenRouter records 19,941,437 monthly visits with -6.2% growth and Paid pricing.

An AI study partner that answers questions, scans problems and explains the steps
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | openrouter.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 0 (0) | 19.94M (19,941,437) |
| MoM Traffic Delta | 0 (—) | -1.33M (-6.2%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (16.1%) |
| Direct Visits / mo | 0 | 11.96M |
| User Rating | 3.2 | 4.8 |
| Supported Platforms | Browser Extension | Website |

An AI study partner that answers questions, scans problems and explains the steps
Ask questions on any subject and get answers plus fuller explanations that you can dig into with follow-up prompts.
Upload a photo or screenshot of a question and GradeGap reads it and provides an answer and explanation.
Get logical step-by-step working for problems so you can follow the method rather than just the final result.
Add lecture notes or textbook content to a Notebook so answers are grounded in your actual course material.
One API key for hundreds of AI models from every major provider
Six hundred plus models for text, image, video, audio, transcription, embeddings, and reranking behind one OpenAI-compatible API.
Requests are rerouted to another provider on outages or rate limits by default, so you don't write custom retry logic.
The auto-router selects a model and provider per request using live marketplace performance and pricing data.
Track spend, tokens, and usage per model, provider, and team member in one place, including bring-your-own-key usage.
A friendly Vietnamese AI study assistant for homework, images and everyday questions

Snap a homework question and get step-by-step AI answers
Study library, AI homework help, and 24/7 tutor access in one place
Study library, AI homework help, and 24/7 tutor access in one place
All-in-one AI study tool for homework help, exam prep, notes, and flashcards
All-in-one AI study tool for homework help, exam prep, notes, and flashcards

Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
SpecialistDelivers exceptional inference speed and high-throughput performance for open models, but focuses primarily on hosted weights rather than multi-provider aggregation.

Free / Open-sourceProvides self-hosted and Python SDK control over 100+ LLMs, but requires setting up your own infrastructure.

SpecialistLow-cost serverless inference APIs for 200+ open models

One unified API for 100+ AI models, with insurance when output disappoints
One unified API for 100+ AI models, with insurance when output disappoints
One API for fast, cost-predictable inference on LLMs and multimodal models
One API for fast, cost-predictable inference on LLMs and multimodal models

Aggregates hundreds of foundation models and agentic tools under one endpoint, but lacks OpenRouter's community popularity and extensive prompt tuning.