TextCortex

TextCortex ships two things: a browser extension/desktop app that injects AI writing, rewriting and chat into any text field across roughly 30,000+ sites (its own count), and a web platform for building no-code "agents" that can be scheduled, @mentioned in Slack/Teams, and pointed at connected knowledge sources (docs, wikis, Salesforce, HubSpot, etc.). It is model-agnostic: the same account can call Claude, GPT, Gemini, Qwen, DeepSeek, Kimi, or GLM depending on task and budget, rather than being tied to one vendor's model. (https://textcortex.com/, https://textcortex.com/integrations)

Free is $0/month: knowledge bases, custom agents, deep research, and 50MB storage, with 100 creations on signup and 20/day after (1 "creation" ≈ 125 words). Premium is $29.99/user/month (excl. VAT), billed either as a flat rate with a credits slider (150 to 2,800 creations/month) or Unlimited. Enterprise is quote-only, adding SSO/SCIM/SAML, dedicated deployment and centralized billing. A 14-day trial exists but there is no seat-sharing on individual accounts. (https://textcortex.com/pricing)

The more interesting design choice: every seat's Premium price funds a token wallet worth 50% of the license fee for premium-model usage (frontier models like GPT-5.5 or Claude Opus, deep research, long agent runs). Standard models keep working after the wallet is empty — no hard lockout, no surprise overage bill unless an admin explicitly turns on paid "Extra Usage." TextCortex publishes the underlying per-model token costs (e.g. Claude 4.6 Sonnet at €2.80/€14.01 per 1M input/output tokens, GPT-5.5 at €4.67/€28.01) rather than hiding them behind a vague "credits" abstraction. (https://help.textcortex.com/hc/en-us/articles/46798075584657-Model-usage-limits-and-Extra-Usage)

TextCortex hosts services in the EU (GDPR-compliant infrastructure, with non-EU model calls covered by SCCs or the US-EU Privacy Framework) and states customer data is never used to train or fine-tune models. It maintains a public trust center at trust.textcortex.com and lists SOC2/ISO certification on its enterprise page, though the certificates themselves are not independently viewable from that page. Where the help center publishes model-hosting regions, several premium models (Claude, Qwen, GLM) do route through EU or UK data centers; a few (GPT-5.5 family via NL, DeepSeek via GB, some Gemini/Kimi variants via US) do not. (https://textcortex.com/business/enterprise, https://help.textcortex.com/hc/en-us/articles/46798075584657-Model-usage-limits-and-Extra-Usage, https://trust.textcortex.com/home)

TextCortex was founded in January 2021 by Ceyhun Derinbogaz and Dominik Lambersy. The only publicly disclosed funding round is a $1.2M pre-seed in June 2022, led by btov Partners (b2venture) with participation from Speedinvest, Entrepreneur First, and angels including Wayve co-founder Amar Shah. No later or larger round has been announced in the press coverage available. (https://www.startbase.de/news/textcortex-erhaelt-12-millionen-us-dollar-pre-seed-finanzierung/, https://www.b2venture.vc/stories/turbocharging-written-communication-with-artificial-intelligence)

The current marketing — "2.4M users worldwide," "$550K saved for every 100 enterprise users/year" from a self-described "study of 2,000 enterprise users," 75% enterprise adoption within 3 months — are all vendor-stated figures on the homepage with no named methodology or independent citation. A buyer sizing TextCortex as a long-term enterprise infrastructure vendor should treat the funding level and the scale claims as two facts that don't obviously reconcile, and ask for references directly rather than relying on the homepage stats. (https://textcortex.com/)

TextCortex is rated 3.7/5 ("Average") on Trustpilot. Reviews split by era: 2023–2024 reviews are largely positive about the browser-extension writing tool (tone-changing, multilingual support, ease of use). Reviews from 2026 are more negative and enterprise/billing-focused: one from August 2026 describes 18 repeated card-charge attempts after cancellation with unresponsive support; another from July 2026 reports previously-available models (Claude Sonnet 4.6) being restricted without notice and a two-week support wait. (https://www.trustpilot.com/review/textcortex.com)

TextCortex's own pricing-page schema markup claims a 4.8/5 rating from 257 reviews and cites G2 recognitions ("Top 50 AI Products 2025," "Top 100 Highest Satisfaction Products 2025"); G2 and Capterra both returned 403 to direct fetch and to an r.jina.ai proxy, so these specific figures could not be independently confirmed and are listed here as vendor-stated only.

If the use case is an individual or small team wanting a model-agnostic writing/rewriting assistant that works inline across the web via browser extension, TextCortex's free tier and $29.99/seat Premium are competitively specified against single-model competitors, and the usage-wallet design avoids nasty overage surprises. If the use case is deploying "enterprise AI infrastructure" at scale — the positioning TextCortex now leads with — the funding history, unverifiable scale claims, and the 2026 billing/support complaints are reasons to run a paid pilot and check references before committing to Enterprise, rather than treating the case studies (MAHLE, b2venture) as representative.