Tuatara Models
Small, purpose-built models from Cymetica, served from one OpenAI-compatible endpoint. Built for agents and pipelines that need a faithful summary or an instant stock basket from a headline. Zero data retention: request and response bodies are not stored.
Decide Zero 1.1live
decide-zero-1.1 · text
Typed decisions with calibrated probabilities. Classifies text into one of your labels and says how sure it is. Listed on the "a few examples per option" condition - one example per option in the request scores 82.11% on BANKING77 (3 per option 85.13%, 5 per option 85.71%) with a calibration error of 0.017; with option names and descriptions only (zero-shot) it scores 77.18%, under the 81.0% bar, so send examples.
Tuatara Summarize 1.0live
tuatara-summarize-1.0 · text
Extractive summarization of a document. Returns the document's own sentences, chosen by a vector-association model of the text, cut to a sentence count, a share of the document or a token budget, so an expensive model reads the extract instead of the whole document. Deterministic, nothing invented.
Tuatara Embed Stocks 1live
tuatara-embed-stocks-1 · embeddings
Vector embeddings of listed stock symbols, built for the connections a sector label does not carry. Which symbols a news story moves, including companies the story never names. Query a symbol for its vector, or send text and combine it with a text model.
Tuatara Topics 1.0coming
tuatara-topics-1.0 · text
Topic discovery for a set of documents. Returns coherent, distinct topics and the documents that belong to each.
Tuatara Embed Words 1coming
tuatara-embed-words-1 · embeddings
General-purpose English word and text embeddings.
Tuatara Embed Crypto 1coming
tuatara-embed-crypto-1 · embeddings
Embeddings tuned for crypto-asset text and tokens.
One endpoint, standard shapes
Base URL https://cymetica.com/api/v1. Send Authorization: Bearer <key> (X-Api-Key works too). Text models answer on /chat/completions with streaming; vector models answer on /embeddings.
curl https://cymetica.com/api/v1/chat/completions \
-H "Authorization: Bearer $TUATARA_KEY" -H "Content-Type: application/json" \
-d '{"model": "tuatara-summarize-1.0",
"messages": [{"role": "user", "content": "Summarize: <your document>"}]}'
curl https://cymetica.com/api/v1/embeddings \
-H "Authorization: Bearer $TUATARA_KEY" -H "Content-Type: application/json" \
-d '{"model": "tuatara-embed-stocks-1",
"input": ["Chipmakers rally on hyperscaler capex", "sym:NVDA", "sym:AMD", "sym:XOM"]}'
The summarizer is extractive: every sentence it returns is taken from the source text and ranked by a relationship-vector model, so a summary never contains a sentence the document did not say. The stock-vector model puts listed symbols (sym:AAPL) and free text in one 4,096-dimension space, so one cosine ranking tells an agent which symbols an event, theme or headline moves, including companies the story never names.
Machine-readable model documents, including readiness and limits: /api/v1/models.
MCP servers
Both live models are also tools any MCP client can call without a key, and are published in the official MCP Registry.
| Server | URL | Registry name |
|---|---|---|
| Tuatara Summarize 1.0 | https://cymetica.com/mcp/v1/summarize | com.cymetica/tuatara-summarize |
| Tuatara Embed Stocks 1 | https://cymetica.com/mcp/v1/stock-vectors | com.cymetica/tuatara-embed-stocks |
| Tuatara Topics 1.0 | https://cymetica.com/mcp/v1/topics | com.cymetica/tuatara-topics |
Keys, plans and pricing
Every call runs on a plan: ours, or the billing of the marketplace or router you call through. Our rates follow the market: once a day they are set below the cheapest comparable hosted API.
| Model class | Our rate, USD per 1M tokens | Cheapest comparable API |
|---|---|---|
| Summarizer (text) | 0.0042 | OpenRouter catalog (any provider) cheapest paid input price (2026-10-31 z-ai/glm-5.2 via Wafer, $0.006 in / $7 out), 0.0060 |
| Stock vectors (embeddings) | 0.0014 | DeepInfra google/embeddinggemma-300m, 0.0020 |
| Plan | Price | Included usage credit | Limits |
|---|---|---|---|
| Trial | free, 14 days, once | $0.50 | 30 a minute, 5,000 a day |
| Starter | $5 a month | $6.25 | 60 a minute, 50,000 a day |
| Pro | $25 a month | $35.00 | 300 a minute, 300,000 a day |
| Scale | $100 a month | $160.00 | 1000 a minute, 1,500,000 a day |
- Self-serve: sign in, start a plan and mint a key under Account → Model API keys. One key opens every live model. Usage beyond the included credit is billed at the same rates from your balance; input and output tokens count at one rate.
- MCP: connect with OAuth or an account API key; the plan on that account pays for the calls.
- Marketplaces and routers: the same models are listed with their own billing; their buyers pay the venue.
- Platforms and gateways: to add Tuatara as a provider, write to contact@cymetica.com and a provider key comes back the same day.