Refine any AI prompt instantly inside ChatGPT, Claude, Gemini & more. Select text → get a production-ready prompt in 1 click.
Users
26
−1 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
6
0 in 30 days
Store rank
#139K
#116K among extensions
Version
1.0.3
updated 20 Sep 2026
Users
monthly, 6 months
Latest, 21 Oct 2026:26 usersMove the mouse over the chart for any month
Ratings count
monthly, 6 months
Latest, 21 Oct 2026:6 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Flux :) AI Prompt Refiner & Optimizer
Stop rewriting the same AI prompt 6 times.
Flux is a free AI prompt refiner and optimizer
that works directly inside ChatGPT, Claude,
Gemini, and any website where you type.
No tab switching. No copy-pasting. Just select
your prompt, refine it, and replace it — all
without leaving the page.
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HOW IT WORKS
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1. Select any text in any input field on any
website
2. Right-click → "Refine with Flux" (or use
the floating button)
3. Answer a few smart contextual questions
about your prompt
4. Get a fully structured, production-ready
prompt back instantly
5. Replace, copy, or insert — one click
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WHY YOUR AI PROMPTS KEEP FAILING
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LLM's don't fail because
they're bad. They fail because your prompt is
missing critical context — the right role,
audience, format, tone, and constraints.
Flux fixes this automatically. It analyses your
raw prompt, identifies what's missing, asks you
the right questions, and builds a complete,
structured prompt that gets you the exact output
you wanted — first try.
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KEY FEATURES
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✦ Works inside any LLM any website
✦ AI-powered prompt analysis — detects missing
context like audience, tone, format, and
constraints before refining
✦ Smart follow-up questions — adapts to your
prompt type (coding, content, research,
marketing, debugging)
✦ Structured output — every refined prompt
includes Role, Objective, Context,
Constraints, and Format
✦ "Why it changed" tab — explains every
improvement so you learn prompt engineering
as you go
✦ Auto-replace — swap your original prompt
with the refined version in one click
✦ Saves to history — every prompt refined
via the extension appears in your Flux
dashboard automatically
✦ Zero setup — install, sign in, and start
refining immediately
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WHO IT'S FOR
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🎓 Students & researchers
Get detailed, academically structured responses
instead of surface-level summaries. Flux
engineers your research questions so AI gives
you exactly the depth you need.
📣 Marketers & content creators
Stop getting generic AI content. Flux locks in
your brand voice, audience, and constraints —
so every output is on-brief, every time.
👩💻 Developers & technical users
Get consistent, structured outputs for your
LLM applications. Flux engineers prompts with
explicit constraints and output schemas.
⚙️ Product managers
Brief AI the way you'd brief a human. Flux
translates your rough intent into a structured
prompt with role, constraints, and format
defined — so you stop iterating and start
shipping.