Trinity Large Thinking APIOPEN WEIGHTS262K context

Pricing & specs mirror our live pricing as of July 2026 (pay-as-you-go).

What is Trinity Large Thinking?

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...

Trinity Large Thinking on the release timeline

Trinity Large Thinking pricing

Pay-as-you-go on DataLLM Lab — these are our live list prices (identical to the pricing page):

On output price, Trinity Large Thinking is cheaper than 66% of the 309 models in the catalog.

What Trinity Large Thinking costs per month

Cost = input price × input volume + output price × output volume. The same five workloads run on every model page, so any two compare directly.

Trinity Large Thinking vs alternatives

When not to use Trinity Large Thinking

• It is served by a single provider, so there is less failover headroom during an outage.

Specs

How to call Trinity Large Thinking

Copyfrom openai import OpenAI
client = OpenAI(base_url="https://api.datallmlab.com/v1", api_key="YOUR_DATALLM_LAB_KEY")
resp = client.chat.completions.create(
    model="arcee-ai/trinity-large-thinking",
    messages=[{"role": "user", "content": "Hello"}],
    # supports tools=[...] and tool_choice
)
print(resp.choices[0].message.content)

Copycurl https://api.datallmlab.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"arcee-ai/trinity-large-thinking","messages":[{"role":"user","content":"Hello"}]}'

Copyimport OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.datallmlab.com/v1", apiKey: process.env.DATALLM_KEY });
const r = await client.chat.completions.create({
  model: "arcee-ai/trinity-large-thinking",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(r.choices[0].message.content);

The same key routes Trinity Large Thinking and 300+ other models — switch models by changing one string. How OpenAI-compatible APIs work.

Prompting tips for Trinity Large Thinking

• State the goal, not every step. Trinity Large Thinking reasons internally — give it the objective, constraints and success criteria and let it plan the approach; over-scripting each step tends to lower quality. Turn effort up for hard problems.
• Huge 262K context — but anchor the ask. You can paste whole documents or codebases; models attend most to the start and end, so put the key instruction at the top and restate it after long inputs.
• Give it real tools. Pass a tools=[...] schema instead of asking it to "pretend" — let Trinity Large Thinking emit tool calls, execute them, and feed results back for the next turn.
• Cheap enough to batch. Great for high-volume classification, extraction and drafting — template the prompt, batch requests, and validate outputs programmatically.

Tips are derived from Trinity Large Thinking's actual capabilities — context window, tool & JSON support, modality and price tier — not generic advice.

Open-source tools for Trinity Large Thinking

Popular open-source projects for running and building with Trinity Large Thinking — star counts pulled from GitHub (July 2026).

Listed by GitHub stars; inclusion is by ecosystem relevance (inference engines, agent frameworks and SDKs), not affiliation. Stars change — see each repo for current numbers.

Migrating to Trinity Large Thinking

Coming from OpenAI or another gateway? On an OpenAI-compatible setup the only changes are base_url → https://api.datallmlab.com/v1 and model → arcee-ai/trinity-large-thinking. Messages, streaming, tool calls and the rest of your code stay the same. Routing & failover guide.

Self-host or use the API?

Trinity Large Thinking ships open weights (arcee-ai/Trinity-Large-Thinking, ~7.8K downloads and 183 likes in the last 30 days), so you can run it yourself. Most teams still use the API: no GPU to provision or keep warm, no inference ops, and instant access across 1 providers with automatic failover. Self-host when data residency or fixed per-token economics matter most.

Rate limits & reliability

Rate limits here are the DataLLM Lab gateway's, not the upstream vendor's. On 429 (rate limited) or 503 (provider busy), retry with exponential backoff. See the error-code guide and failover setup.

Related reading

Frequently asked questions