Open Models Api Beta

Introducing the Arcee Open Models API Beta | Arcee AI | Building Open Intelligence

Introducing the Arcee Open Models API Beta

Introducing the Arcee Open Models API Beta

T

The Arcee AI Team

1 min read • Aug 13, 2026

Product Expanding the Arcee open models API beyond Trinity to give developers choice across model families for demanding, long-horizon agent workloads.

Today, we’re expanding the Arcee Open Models API beyond our Trinity family to include a broader selection of frontier open models. A broader model catalog lets us serve the full Arcee product stack more vertically while giving end users, developers, and enterprises meaningful choice. It also helps us better understand why people choose a particular model for a particular task. When the API is used across our products, we can learn which models users prefer for a given task, and more importantly, why they chose them. Those insights will help us consistently develop and deliver Trinity models that are exceptional, diverse, and widely adopted. More options is also central to the promise of open models: no single model is best for every workload, user, or organization. At launch, the beta includes: Trinity-Large-Thinking DeepSeek-V4-Pro (Preview) DeepSeek-V4-Flash-Latest GLM-5.2 Kimi-K3 Inkling-Small from Thinking Machines, another American lab advancing the frontier of open-weight models

Built alongside nac We’re launching the expanded API beta on the same day that we’re open-sourcing nac , our internal agent harness for long-running tasks. We built nac to support demanding agentic workloads that may run for extended periods, and over time, what we learn from nac will help us improve how the API routes, serves, and supports models for long-running tasks. Learn more about nac here .

Pricing All prices are in USD per 1 million tokens. Model Input Output deepseek/deepseek-v4-flash-latest $0.14 $0.28 trinity-large-thinking $0.25 $0.80 thinkingmachines/inkling-small $0.50 $1.20 deepseek/deepseek-v4-pro $1.74 $3.48 zai-org/glm-5.2 $1.40 $4.40 moonshotai/kimi-k3 $3.00 $15.00

Try it with $5 in credits Anyone who signs up today and adds a credit card will receive $5 in API credits to try the expanded model catalog with nac . Sign up at platform.arcee.ai .

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Everything you need to start building. Ship on our API or download the models and run them yourself. Every model is open-weight, so you can inspect, fine-tune, and go to production on your terms. Get API Key Contact Sales