What is Arcee AI
Arcee AI develops the open-weight Trinity model family and provides hosted inference through an OpenAI-compatible API, alongside downloadable models for self-hosting.
Hosted model pricing
As of August 4, 2026, Trinity Mini costs US$0.045 per million input tokens and US$0.15 per million output tokens. Trinity Large Preview costs US$0.25 input and US$1 output per million tokens. Arcee also advertises a rate-limited free tier for trying Trinity Mini.
Trinity Mini is positioned for high-throughput agent and task workloads, while Trinity Large is the larger generalist for reasoning, coding, mathematics and complex task decomposition. The current hosted API supports chat completions, streaming, tool calls and structured response controls.
Conductor and self-hosting
Arcee Conductor routes requests across supported third-party models without adding a premium to the selected model's API rate. New Conductor accounts are offered US$20 in credits. Trinity weights are also available for self-hosting under their published open licences, avoiding an Arcee inference charge but leaving infrastructure costs to the user.
Official sources: Arcee hosted-model pricing, Trinity model overview, Arcee Conductor pricing.