# Best Generative AI Agencies in Lisbon

> 3 agencies. Top-ranked: DareData, Altar.io, BySix.

Canonical page: https://www.aiagencies.eu/services/generative-ai/lisbon
Generated: 2026-09-28 · Curated by Gabor Kiss · No paid placements — inclusion, score, and rank are never sold.

## Ranked roster
1. **DareData** — Lisbon, Portugal · €45-85/hr (directory-listed) · team 50-249 · founded 2019 · services: AI Development, AI Consulting, Generative AI · 10 documented client engagements with source URLs · reviewed 2026-09-03 · https://www.aiagencies.eu/agency/daredata
2. **Altar.io** — Lisbon, Portugal · rate not published · team 10-49 · founded 2015 · services: AI Development, AI Consulting, Generative AI · 2 documented client engagements with source URLs · reviewed 2026-09-09 · https://www.aiagencies.eu/agency/altar-io
3. **BySix** — Lisbon, Portugal · rate not published · team 50-249 · services: AI Agents, Generative AI, AI Consulting · 5 documented client engagements with source URLs · reviewed 2026-09-03 · https://www.aiagencies.eu/agency/bysix

## Compared head-to-head
Curated comparison pages (published rates, team size, coverage, projected 12-week engagement cost, and the curator's verdict on both sides — pairings are never sold):
- Altar.io vs DareData: https://www.aiagencies.eu/compare/altar-io-vs-daredata

## About this market
Generative AI in Lisbon is a three-firm page and the three come at it from different directions. DareData built its own GenOS platform and publishes document intelligence extracting from more than 30 data types for a construction engineering client, alongside the NOS invoice work. BySix is the purest generative shop of the three: 70-plus staff across Algés, Porto and São Paulo, with a résumé-formatting system for Fullsight reporting 20x faster turnaround and a product-owner agent for Trimble that auto-drafts over 70% of user stories. Altar.io ships generative features inside larger product engagements.

None of the three publishes what it costs to run these systems, which is the number that decides whether a generative feature survives its second year. Ask for cost per thousand invocations, then ask how quality regression is caught when the underlying model updates—both answers should exist in writing before you sign. BySix is also the one entry here whose founding year is not published anywhere on its own site, which is a small thing but worth confirming directly if vendor longevity matters to your procurement.

## Questions buyers ask

### How much do Generative AI agencies in Lisbon charge?
Of the 3 Generative AI agencies on this page, 1 publish complete hourly rate ranges. They range from €45 to €85, with a median around €65. Across the register, rated agencies in Europe bill €65–110/hr (150 rated). 1 agency operates under €100/hr: DareData.

### Which are the top-rated Generative AI agencies in Lisbon?
Based on our editorial scoring (portfolio quality, business credibility, and case study depth), the top-ranked Generative AI agencies in Lisbon are DareData, Altar.io, BySix. See the full review on each agency's profile.

### Are there Lisbon Generative AI agencies specializing in FinTech?
Yes — 2 agencies on this page list FinTech experience. Top examples include DareData, Altar.io.

### How recent are these Generative AI agency reviews?
All 3 agencies on this page were editorially reviewed between Sep 3, 2026 and Sep 9, 2026 — the most recent being Altar.io. See our review methodology for how scores are calculated.

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Source: AIAgencies.eu — the curated register of European AI agencies. Rate provenance: "agency-confirmed" = disclosed via submission or claimed profile; "directory-listed" = Clutch or two agreeing B2B directories (lone unverified sources are never written). Full method: https://www.aiagencies.eu/methodology · Rate index: https://www.aiagencies.eu/rates