"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
AI-powered qualitative research
Your research data,
finally understood.
Codex is a modern qualitative analysis workbench. Import sources, build a codebook, run AI-powered analysis — and let Claude help you find the patterns your data is hiding.
I never really felt like I belonged in that space — it was always clear that the rules were written by and for people who didn't look like me. When I started speaking up, things shifted. Not immediately, but gradually the dynamic changed.
My sense of identity had always been tied to place. Moving disrupted something fundamental — not just logistically but psychologically.
AI Chat
What are the main tension points across interviews?
Participants consistently describe tension between belonging and power — 8 of 12 sources show co-occurrence. Identity codes cluster around turning-point moments...
Built for
Used by people from
IBM Research
Oxford
MIT Media Lab
ETH Zürich
Cambridge
IBM Research
Oxford
MIT Media Lab
ETH Zürich
Cambridge
IBM Research
Oxford
MIT Media Lab
ETH Zürich
Cambridge
IBM Research
Oxford
MIT Media Lab
ETH Zürich
Cambridge
0+
Source formats
PDF · DOCX · PPTX · audio · OCR
0%
Intercoder agreement
on AI-mediated test corpora
<0s
To first coded source
from sign-up to coding
0
Installation steps
fully web-based, any device
Everything you need
From raw data to
publishable insight
Codex covers the full qualitative workflow — data import, iterative coding, rich queries, and AI-powered synthesis.
Pro
Claude AI, embedded everywhere
Codex calls Claude for inductive coding, codebook expansion, intercoder mediation and full report drafting — not as a single chat sidebar, but as a tool woven through every workflow.
Any source, any format
PDF, DOCX, PPTX, CSV, audio, images. OCR + Whisper transcription run automatically.
Manual & AI-assisted coding
Highlight any selection, assign codes with ⌘1–9. Overlapping codes, hierarchies, and AI suggestions per source.
Queries that actually answer
Matrix coding, co-occurrence, word frequency and per-code vocabulary clouds — every query is one click from your codebook.
Team
Real-time team sync
S3-backed project sync, shareable read-only links, snapshot history, and intercoder reliability built in.
Why Codex?
NVivo was built for the desktop era.
Codex was built for now.
Web-based — no installation, works on any machine
Claude AI embedded throughout — not bolted on
Real-time team collaboration with S3 sync
Audio transcription + image OCR built-in
Share read-only project links with no login required
Claude — live in your project
Working Built for academic rigor
AI you can cite,
verify, and defend
Academic work demands proof, not vibes. Codex makes every AI action traceable, grounded in your data, and reproducible — so you can trust it, and so can your reviewers.
Tamper-evident AI ledger
Every AI run is written to an append-only, hash-chained record — model, prompt version, inputs and outputs. Any edit breaks the chain, so your trail is provably intact.
Grounded, cited answers
The assistant answers only from your data and cites the exact passages it used. When the data doesn't support an answer, it says so instead of guessing.
Verbatim quote verification
Every quote the AI attributes to a participant is checked, character-for-character, against the original source. Fabricated quotes are flagged — never silently included.
Full method transparency
See the exact model, temperature and prompt behind any output. Nothing is a black box — what the AI was asked is always inspectable.
Human stays in control
The AI suggests; you decide. It never silently changes your data — every AI-suggested code is marked as such and waits for your review before it counts.
Publication-ready audit trail
Export a methods statement straight from the ledger — models, dates, features used, and integrity check — to drop into the methods section of your paper or thesis.
The principle: the AI assists, you decide. It never changes your data on its own, it grounds every claim in cited passages, and it records what it did in a tamper-evident log you can export. Trustworthy AI isn't a feature here — it's the foundation.
Loved by researchers
From dissertation desks
to enterprise UX teams
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
"Codex actually understands my codebook. Drafting the findings section took an hour instead of a week."
"Co-occurrence + the AI chat assistant is the combo I didn't know I needed. I ask questions, it cites participants."
"Intercoder reliability with AI mediation is genuinely useful — not a checkbox. It explains conflicts, not just counts them."
"Whisper transcription + AI-assisted coding on interview audio is what finally let my team finish fieldwork on time."
"Matrix queries that used to take 20 minutes to set up now answer themselves. The shareable links replaced our screenshot Slack threads."
"I migrated three NVivo projects to Codex in an afternoon. The AI coding suggestions matched my codebook better than I expected."
Pricing
Start free,
scale when you need to
No credit card required. Upgrade at any time.
Free
$0/month
For solo explorers
- 2 projects
- 3 sources per project
- Manual coding & highlighting
- Annotations & memos
- Basic queries (search, word freq)
- JSON export
Most popular
Pro
$19/month
For serious researchers
- Unlimited projects & sources
- AI-assisted coding
- AI Chat Assistant
- Report & interview guide generation
- Intercoder reliability analysis
- Co-occurrence & coverage analysis
- Word clouds & matrix queries
- CSV & JSON export
Team
$49/month
For research teams
- Everything in Pro
- Real-time team collaboration
- Longitudinal theme analysis
- Progressive memos (auto-generated)
- Project snapshots & restore
- Shareable read-only links
- Priority support
Free forever. Upgrade anytime. Ready to see what
Ready to see what
your data is saying?
No installation. No credit card. Start coding your first source in minutes.