Models and API keys
The chat runs on a language model. There are two ways to power it.
Free tier
Section titled “Free tier”Sign in and start typing — there is nothing to configure. Free turns run on Haiku, and each reply notes how many you have left today. The allowance resets at 00:00 UTC.
Free-tier turns do not include web search, because search bills to the key’s owner and on free turns that is us.
Bring your own key
Section titled “Bring your own key”Settings → API keys. Paste a key and the model picker unlocks:
| Provider | Models |
|---|---|
| Anthropic | Haiku, Sonnet, Opus, Fable |
| OpenAI | GPT‑5.6 sol, terra, luna |
| OpenRouter | Several hundred models from ~45 vendors |
With your own key you get unlimited turns, your choice of model, and — on Anthropic and OpenAI — web search. Usage bills directly to your provider account; taker never takes a cut of inference.
Your key is encrypted before storage and cannot be read back by anything, including support. Remove key deletes it outright; chat then falls back to the free tier.
OpenRouter
Section titled “OpenRouter”An OpenRouter key reaches many vendors on one account, including models that have no direct integration here.
The picker opens on a short list and searches the rest — start typing a vendor or model name to reach the full catalogue.
Two things are worth knowing about it.
Not every OpenRouter model appears. taker works by having the model call
tools: it proposes an order through a tool, and the server prices and places
it. A model that cannot call tools cannot do that, and rather than fail
strangely — replying “placing that order now” and doing nothing — those models
are left out of the picker entirely. Roughly 300 of OpenRouter’s catalogue
qualify. OpenRouter’s :batch variants are also excluded: they answer
asynchronously, which does not work in a chat window.
Web search is unavailable on OpenRouter. Search is a tool the provider runs on its own side, and its shape differs between Anthropic and OpenAI. There is no equivalent that works across every vendor OpenRouter fronts, so turns on an OpenRouter model have no search.
Auto-execute and model choice
Section titled “Auto-execute and model choice”Auto mode skips the confirmation card for orders under your limit. It requires a verified model.
Verified means the model’s tool calling has been checked as reliable — the frontier models from Anthropic, OpenAI and Google. This is not a judgement of how good a model is in general. It is specifically about whether it holds an exact schema every time, because the failure that matters is not a refusal but a card that looks perfectly normal with one wrong number in it.
Every other model still trades. It simply always shows the card for you to read, the same rule that already applies to any turn that used web search. The picker marks these confirms every trade so you know before you switch.
Which model to pick
Section titled “Which model to pick”Haiku is fast and entirely adequate for “long 5x eth 2k”. The larger models are worth it for multi-step requests, questions that need reasoning, or when you want a more capable conversational assistant.
Order construction is deterministic regardless of model — the numbers on a card come from the server, not the model, so a cheaper model does not mean a worse price. It mostly means a less articulate conversation.