Privacy Policy.

• Account data — name, email, auth identifiers. Managed by Clerk.
• Chat content — messages and responses, session titles.
• Billing data — Stripe customer/subscription IDs. We do not store card numbers.
• Usage data — tokens, timestamps, model identifiers, estimated cost.
• Research traces — anonymized interaction excerpts. Opt-out available.
• Technical data — IP for rate limiting, user-agent, logs kept up to 30 days.

• Operate the Service and respond to your requests.
• Bill you (if applicable) and prevent abuse.
• Study sycophancy, pragmatics, and epistemic state in large language models. Core research purpose of the project. You can opt out.
• Comply with legal obligations.

We do not sell personal data. We do not use chat content to train our own models, nor share it with third-party model trainers.

• Clerk — authentication.
• Stripe — payment processing.
• OpenRouter — routes requests to LLM providers; default is zero-retention where available.
• Neon (Postgres, Frankfurt) — durable data.
• Upstash (Redis) — rate limits and ephemeral caches.
• Hetzner — application hosting.

Toggle research use from the chat header or Settings. When disabled, no new research records are stored.

Subject to your jurisdiction (GDPR, CCPA, etc.), you may:

• Access, correct, delete your personal data
• Export your chat history
• Withdraw research consent
• Object to automated processing

Email contact@suncostlabs.com from the address on your account.

• Account + chat data: while account exists; deleted within 30 days of account deletion.
• Usage records: up to 24 months.
• Billing records: as required by tax law (≈7 years).
• Request logs with IP: 30 days.
• Research traces: indefinite in anonymized form unless you request deletion.

We use cookies set by Clerk for authentication. We do not use third-party advertising or tracking cookies.

TLS in transit, provider-level encryption at rest. No system is perfectly secure; we disclose material breaches per applicable law.

The Service is not directed to children under 13.

Material changes will be announced in the product or by email. The “last updated” date reflects the current version.

contact@suncostlabs.com