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Company research · Unclassified

Wordware (Sauna)

Sauna's connected assistant could take recurring work off a founder's plate across email, project tools and business systems.

Not assessedNot graded

Autonomy has not been assessed

Primary sources checked . Published claims and terms reviewed; no independent product or financial audit.

The recorded proposition

Wordware's Sauna advertises persistent context, scheduled cloud work, connected apps and software creation, reachable through web, iOS, messaging, Slack and email.

Where humans remain involved

Users connect tools, supply context and configure autonomy from suggested actions to independent execution. Sharing and permissions remain user controlled.

What still needs evidence

Verify which tasks Sauna completes independently and log failures and interventions. Treat the older Wordware funding and team figures as historical company context, not current Sauna usage or staffing.

Customer evidence and its limits

The reviewed product page includes a walkthrough and interface examples, but no named customer financial result or measured intervention rate.

Sauna feature claims and configurable autonomy were not exercised in a live account. Historical Wordware fundraising or team size does not measure today's Sauna customers or operating labor.

Financial and team context

Reported figures retain their original scope. Revenue periods and headcount dates may differ; these are not a current audited financial statement.

Revenue / ARR as recorded
Not reported

No field-specific source recorded.

Funding as recorded
$30MSource: Forbes

Round / transaction: Seed (one of YC's largest)

Recorded date: 2024-11

Investors / backers: Spark Capital (lead) · Felicis · Y Combinator · Day One Ventures · Paul Graham (angel)

Pricing and commercial terms

Sauna lists Free with 100 daily credits, or 200 with a verified card. Monthly plans: Lite $29/1,200 credits, Basic $99/4,000, Pro $299/12,000 and Team $999/40,000. No annual billing; paid plans have no trial.

Published information checked 2026-09-10; taxes, account eligibility and checkout terms may differ. Unresolved pricing is explicitly marked above.

Recorded referral terms: Launch promo only: first 2,000 Sauna users got free daily credits. These terms have not been revalidated for this profile.

Founders and recorded roles

  • Filip Kozera

    CEO; Cambridge; previously founded a Transformer-based human-memory startup.

  • Robert Chandler

    CTO; Cambridge; led ML for self-driving at Five AI (acq. Bosch).

Recorded technology stack

  • MCP custom connectors
  • 3,000+ SaaS integrations
  • Cloud-hosted persistent agents

Components listed in the research record; integrations have not been independently tested here.

Research timeline

  1. 2026-05

    Launched Sauna (sauna.ai) — rebranding around an always-on proactive AI assistant.

    Direct article link not recorded.

  2. 2024-11

    $30M seed led by Spark Capital; previously the #1 Product Hunt launch of all time.

    Direct article link not recorded.

Sources and coverage limits

Product, pricing, human involvement and customer-evidence sources were checked on 2026-09-10. Financial figures, founders, stack and the timeline retain their historical research scope. Company announcements, sponsored articles and founder interviews can establish what was said; they do not independently prove sustained autonomy or revenue.