Trinity Large Thinking
by Arcee AIReleased Apr 1, 2026
arcee-ai/trinity-large-thinking- Calls tools
- Reasons before it answers
- Caches long prompts
Trinity Large Thinking is a powerful open source reasoning model from the team at Arcee AI. It shows strong performance in PinchBench, agentic workloads, and reasoning tasks. Launch video: https://youtu.be/Gc82AXLa0Rg?si=4RLn6WBz33qT--B7...
- Input / 1M tokens
- $0.30
- Output / 1M tokens
- $0.96
- Context
- 262K
- Longest answer
- 80K
What it costs
What each call is charged to the token's AI credit.
| Billed for | You pay |
|---|---|
| Input tokens | $0.30 / 1M |
| Output tokens | $0.96 / 1M |
| Cached input, read | $0.072 / 1M |
A typical call
A short chat turn: 2,000 tokens in, 500 out.
- per call
- $0.0011
- calls per $20
- 19K
What it can do
From its listing. The router passes every field through.
- Reads imagesNo
- Reads files and PDFsNo
- Hears audioNo
- Calls toolsYes
- Answers in a JSON schemaNo
- Reasons before it answersYes
- Searches the webNo
- Caches long promptsYes
- Draws imagesNo
Call it
Any router key works, in the format your SDK already speaks.
import OpenAI from "openai";const ai = new OpenAI({ baseURL: "https://relayfor.si/api/v1", apiKey: process.env.RELAYFOR_ROUTER_KEY,});const reply = await ai.chat.completions.create({ model: "arcee-ai/trinity-large-thinking", messages: [{ role: "user", content: "Welcome the 1,000th holder in one line." }],});Specifications
What its maker and providers list for it.
- Reads
- Text
- Writes
- Text
- Context
- 262,144 tokens
- Longest answer
- 80,000 tokens
- Intelligence index
- 10.8 (#154 of 220 rated)
- Released
- Apr 1, 2026
- Moderation
- None
Request fields
The fields its providers accept, passed through as you send them.
- include_reasoning
- max_tokens
- reasoning
- temperature
- tool_choice
- tools
- top_k
- top_p
Questions
How much does Trinity Large Thinking cost?
$0.30 per million input tokens and $0.96 per million output tokens, paid from the token's AI credit. A call of 2,000 tokens in and 500 out costs about $0.0011.
How do I call Trinity Large Thinking?
Make a router key for one of your tokens on the dashboard, point any OpenAI or Anthropic SDK at https://relayfor.si/api/v1 and send the model id arcee-ai/trinity-large-thinking. The token's AI credit pays for each call.
How long a prompt can Trinity Large Thinking take?
Up to 262,144 tokens of context, and up to 80,000 tokens in one answer.
Are my prompts stored?
No. The RFS Router passes each call through and keeps only its token counts and cost, for the token's usage page.
Similar in price
Output price per 1M tokens
