The four MusePics AI sites, and which one to open first

Most people do not need another list of AI tools. They need to know which of the four tabs they already have open solves the thing in front of them. This is that map for the MusePics family: four AI sites, four different jobs, and a short answer for each.

The four are built by the same team and share a login, but they are not interchangeable. One generates images, one scores text, one answers questions from your own documents, and one writes classroom paperwork. Opening the wrong one wastes an afternoon; opening the right one takes ten seconds.

What each MusePics AI site is for

Start with the task, not the tool. The four sites split cleanly along the kind of output you want back.

• AIGenerate returns an image. If you need a picture of a specific person in a specific scene, this is the one.
• Jev FastEval returns a number and a list of flags. If you have text and want to know whether it will work before you send it, this is the one.
• Musebrain returns an answer with a citation. If the answer lives in your own PDFs and notes rather than on the public web, this is the one.
• LessonCraft returns a document. If you teach and the output has to be a lesson plan, a quiz or feedback a parent could read, this is the one.

That is the whole decision tree. Everything below is the reasoning behind it.

AIGenerate: when the face has to stay the same

AIGenerate is an AI image generator tuned for continuity rather than for one-off beauty. Upload up to fourteen reference photos and it keeps the face, freckles and eye colour while you change the outfit, the location and the light.

That single constraint changes what the tool is good for. Character sheets for a comic, storyboards with a fixed protagonist, a product model photographed in five outfits, profile pictures in a chosen style — the jobs where a beautiful stranger is a failure, not a success.

The practical limits are worth knowing before you start. Continuity is strongest with a clean, front-facing reference and weakest when the new scene changes the camera angle sharply. Three quality tiers trade credits for detail: a fast draft tier, a 2K tier for most finished work, and a 4K identity tier for portraits. The free allowance is three images a day with no account, which is enough to judge whether the identity holds on your particular face.

Read the full breakdown on the AIGenerate page, including the pricing details and the alternatives if you need a different trade-off.

Jev FastEval: when you want a score, not a paragraph

Jev FastEval is the opposite of a chat window. Instead of streaming fifteen seconds of prose you then have to reformat, it renders a scoring dashboard in roughly a third of a second: a number, the specific problems highlighted, and the one factor that decided the result.

The suite is ten task-specific evaluators rather than one general one. The marketing set covers headline click-through prediction, ad copy compliance and meta description appeal. The career set checks a resume against a specific job description. The review set classifies contract risk and buyer-review pain points. A developer evaluator classifies JSON and API errors, and an open "ask anything" mode gives a ranked judgment on a question.

The value is repeatability. Run the same headline twice and you get the same shape of answer, which is what makes it usable as a pre-flight check before copy goes to a client. A chat model will happily agree with you twice.

One caveat that matters: a contract risk score is a first pass, not legal advice, and an ATS match score is a heuristic, not a hiring decision. See the Jev FastEval page for the full tool list.

Musebrain: when the answer is in your own files

Musebrain is a guide and a workspace for personal AI — a private index of everything you have written down, answering with citations you can check.

The comparison that matters here is architectural. General assistants are trained on the public web, which makes them excellent at general knowledge and useless at the specifics of your own work: the pricing decision you made in March, the onboarding copy you rewrote twice. Pasting that context into a chat box every morning is not memory, it is manual labour.

A personal AI adds a retrieval layer instead. Your documents are split into passages, the most relevant ones are pulled into the prompt at question time, and the model stays general while the knowledge becomes yours. Four things decide whether that is worth keeping: whether your data trains the model, whether memory persists, whether ingestion is frictionless, and how much latency retrieval adds.

If the tool cannot show you the source passage, treat the answer as a guess. The Musebrain page covers the full comparison table and the privacy questions worth asking any vendor.

LessonCraft: when the output has to be a document

LessonCraft handles the paperwork around teaching: standards-aligned lesson plans, quizzes with a separate answer key, and rubric-based feedback that quotes the student's own words.

The details that decide whether a teacher keeps using it are unglamorous. A lesson plan is only useful if it cites the anchor standard and includes a timed sequence, differentiation and an exit ticket — otherwise you rewrite it anyway. A quiz is only useful if the answer key prints on its own page. Feedback is only useful if it names what worked and what to fix next, in language the student recognises.

Export matters as much as generation. If the result cannot become a .docx or a printable page, it has not saved any time. The LessonCraft page covers coverage across Common Core, NGSS, TEKS and the main international frameworks.

How to choose in under a minute

Ask what the output is.

You want	Open	Why
A picture of a specific person	AIGenerate	Identity-preserving generation
A verdict on text you already wrote	Jev FastEval	Fixed score, highlighted flags
An answer from your own documents	Musebrain	Private retrieval with citations
Classroom paperwork	LessonCraft	Documents, not chat replies

If two rows seem to apply, the one that produces the artefact you have to hand in wins. A score does not become a lesson plan, and an image does not become a citation.

FAQ

Are these four sites free?

Each has a free tier, and none require a credit card to start. AIGenerate gives three images a day without an account; Jev FastEval gives ten runs a day to registered users; LessonCraft starts free with an optional paid tier when the monthly cap gets in the way; Musebrain's guide is free to read.

Do I need four separate accounts?

No. The four sites share one login, so signing in on one gets you into the others.

Which one should a complete beginner start with?

Whichever matches the task you already have. If you have no task yet, start with the AI Image category — image generation is the fastest way to see whether a tool is worth your time, because the result is visible in seconds.

The short version

Four MusePics AI sites, four kinds of output: an image, a score, a cited answer, a document. Pick by output and you cannot go far wrong. The rest of this blog goes deeper on each one, starting with how face consistency actually works.