Research Deeper. Understand More.
Acastus Intelligence helps transform complex questions into structured investigations using AI-assisted research, source analysis, and evidence-backed reporting.
- Windows 10 and 11
- A Free plan
- PDF, HTML, Markdown, CSV and JSON exports
Break a hard question into parts, then investigate each one.
You describe a question. Research agents plan the investigation, find and read sources, keep exact excerpts, check them, look for counter-evidence, and produce a report in which every finding links to its source.
One question is enough to start. You can also add things to compare, criteria such as Price (USD, lower), background, must-answer questions, scope, trusted or excluded domains, freshness and files (PDF, HTML or text).
While it runs, mission control shows real stages and counters (discovered, fetched, parsed, relevant, analyzed, cited, rejected, duplicates, inaccessible). There is no fake percentage. You can pause, resume, cancel or retry failed stages, and you can close the app: the server keeps working.
Specialised agents, each with one job.
Research is split between agent roles instead of one prompt doing everything. The Agent activity view shows the actual task graph: which role did what, attempts, errors and model usage.
Planner
Turns your question into a research plan.
Search
Finds candidate sources for each part of the plan.
Reader
Reads the sources and keeps exact excerpts.
Fact-checker
Checks facts against the original text and keeps only those that match.
Writer
Writes the report from the verified findings.
Roles by plan
How many agent roles each plan includes is shown live on the pricing page.
Inspect the evidence behind every finding.
The evidence explorer lists every claim with its status (Supported, Contested, Unverified or Rejected) and a confidence label with the reason for it, never a bare percentage. For each claim you see the original excerpt with its location, retrieval date and publication date, and you can open the stored source text to see exactly what was analyzed.
- Verified: the excerpt was re-checked against the stored source.
- Contested: independent sources disagree.
- Unverified: could not be checked, so treat it as not established.
- Derived: computed by code from cited values.
Anything that cannot be traced to a source is removed or marked unverified before a report is published.
As quick or as deep as the question deserves.
Choose an effort level for each research. Every plan can use every level; how much of your usage a run consumes depends on the level.
Quick
A fast answer from a handful of strong sources.
Standard
A balanced report for most questions. The default.
High
More sources, more cross-checking, more detail.
Max
The most thorough research, for decisions that matter.
The app shows an estimate of the usage a run will take before you start it. Usage is a rolling limit (5 hours on Free, 3 hours on paid plans) plus a weekly limit, shown as percentages. If you run out mid-way, the research stops and writes its report from what it already found. See Docs: usage limits.
An answer, not a pile of links.
Reports open with a direct answer and then show their work.
Structured
Executive summary, findings per sub-question, comparison, counter-evidence, limitations, methodology and every citation.
Click through
Click a citation such as [S3.2] to jump to the excerpt it came from.
Export
Save as PDF, HTML or Markdown, export the evidence as CSV or JSON, or print.
The comparison studio takes its values only from evidence: Unknown means no verified value, and Conflicting means sources disagree and is left out of scores. See all capabilities on the features page.
Your reports stay with your account.
Research runs on the Acastus research server and your reports are stored with your account, so they are not tied to one computer. You can export reports, or export all of your data from Settings.
With Living Research, a completed research can be re-checked on a schedule. You see what is new, changed, withdrawn, or that there is no confirmed change, and each re-check produces a new report version you can compare with the last one. Which plans include Living Research, and how many topics, is shown live on the pricing page.
A Windows app built for long investigations.
Windows 10 and 11
64-bit. Installs per user without administrator rights.
Verified updates
The app checks for updates and installs them only after you say so. Each update is verified against its published SHA-256 checksum.
Sign in with Google
Your plan comes from your account on the Acastus server, never from the page you are looking at.
An Android app for Acastus Intelligence has not been publicly released. Get the Windows app or read the docs.