Trinity Large Thinking API

arcee-ai/trinity-large-thinking
Trinity Large Thinking on AIMLAPI.
Context
262K tokens
Input
$0.302588 / 1M tokens
Output
$1.16909 / 1M tokens

How to use Trinity Large Thinking API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to arcee-ai/trinity-large-thinking.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "arcee-ai/trinity-large-thinking",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "arcee-ai/trinity-large-thinking",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"arcee-ai/trinity-large-thinking","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Trinity Large Thinking API Pricing

TypePrice
Input
$0.302588 / 1M tokens
Output
$1.16909 / 1M tokens
Cached input
$0.082524 / 1M tokens

Trinity Large Thinking Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
MMLU-Pro
83.4%
Multi-discipline knowledge + reasoning (harder MMLU)SourceJuly 12, 2026
GPQA Diamond
76.3%
Google-proof graduate science questions (hardest subset)SourceJuly 12, 2026
Intelligence
10.9
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Coding
25.8
Composite score across standardised coding evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

Trinity Large Thinking vs other models

ModelInputOutputContextBest for
$0.302588 / 1M tokens
$1.16909 / 1M tokens
262K tokens
Reasoning + agents
$6.5 / 1M tokens
$39 / 1M tokens
1.05M tokens
Reasoning + agents
$2.6 / 1M tokens
$13 / 1M tokens
1M tokens
Balanced coding + agents
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$0.65 / 1M tokens
$3.9 / 1M tokens
1.05M tokens
Reasoning + agents

Frequently asked questions

Trinity Large Thinking has a 262,144 tokens context window and can return up to 80,000 tokens.

Trinity Large Thinking takes image, text as input and returns text.

Use arcee-ai/trinity-large-thinking as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Trinity Large Thinking is priced at input $0.302588 / 1M tokens, output $1.16909 / 1M tokens, cached input $0.082524 / 1M tokens.

Yes, Trinity Large Thinking can stream responses as they are generated.

Yes, Trinity Large Thinking accepts image input alongside text.

It supports function calling, reasoning, streaming, structured outputs, and web search.

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