[Arcee AI](/ai-gateway/models/labs/arcee-ai)

# Trinity Large Thinking

Trinity Large Thinking is a reasoning-focused variant in Arcee AI's Trinity Large family: a 398B-parameter sparse mixture-of-experts model with about 13B active parameters per token, built on Trinity Large Base and emphasizing extended chain-of-thought reasoning. Your use is subject to Arcee AI's [Terms](https://www.arcee.ai/terms-and-conditions) & [Privacy](https://www.arcee.ai/privacy-policy) Policies.

ReasoningTool Use

[Use with AI Gateway](https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Futm_source%3Dgateway-model-page%26utm_campaign%3Dai-gateway-models&title=Get+Started+with+Vercel+AI+Gateway) [View docs](https://vercel.com/docs/ai-gateway)

AI SDKChat CompletionsMessagesResponses

```
1import { streamText } from 'ai'
2

3const result = streamText({
4  model: 'arcee-ai/trinity-large-thinking',
5  prompt: 'Why is the sky blue?'
6})
```

[Read docs](https://vercel.com/docs/ai-gateway/sdks-and-apis/ai-sdk)

[Overview](/ai-gateway/models/trinity-large-thinking) [API](/ai-gateway/models/trinity-large-thinking/api) [About](/ai-gateway/models/trinity-large-thinking/about) [Providers](/ai-gateway/models/trinity-large-thinking/providers) [Throughput](/ai-gateway/models/trinity-large-thinking/throughput) [Latency](/ai-gateway/models/trinity-large-thinking/latency) [Uptime](/ai-gateway/models/trinity-large-thinking/uptime) [Status](/ai-gateway/models/trinity-large-thinking/status) [Similar](/ai-gateway/models/trinity-large-thinking/similar) [FAQ](/ai-gateway/models/trinity-large-thinking/faq)

## [Copy link to heading](#playground)Playground

Try out Trinity Large Thinking by Arcee AI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.

![arcee-ai logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Farcee-ai-256.png&w=48&q=75)Trinity Large Thinking

![arcee-ai logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Farcee-ai-256.png&w=96&q=75)

Trinity Large Thinking

## [Copy link to heading](#providers)Providers

Route requests across multiple providers. Copy a provider slug to set your preference. Visit the [docs](/docs/ai-gateway/provider-options) for more info. Using a provider means you agree to their terms, listed under Legal.

| Provider |
| --- |

| Context | Max Output | Latency | Throughput | Input | Output | Cache | Web Search | Capabilities | ZDR | No Training | Release Date |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

| ![arcee-ai logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Farcee-ai-256.png&w=48&q=75) [Arcee AI](/ai-gateway/models/providers/arcee-ai) Legal:[Terms](https://www.arcee.ai/terms-and-conditions)•[Privacy](https://www.arcee.ai/privacy-policy) | 262K | 80K | 0.4s | 261tps | $0.25/M | $0.90/M |  | — |  |  |  | 04/01/2026 |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

## [Copy link to heading](#throughput)Throughput24 hours

1W

1D

P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/metrics) for more info.

## [Copy link to heading](#latency)Latency24 hours

1W

1D

P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/metrics) for more info.

## [Copy link to heading](#uptime)Uptime24 hours

1W

1D

1H

Direct request success rate on AI Gateway and per-provider. Visit the [docs](https://vercel.com/docs/ai-gateway/models-and-providers/uptime) for more info.

1W

1D

1H

## [Copy link to heading](#more-models-by-arcee-ai)More models by Arcee AI

All

Text

Code

| Model |
| --- |

| Context | Latency | Throughput | Input | Output | Cache | Web Search | Capabilities | Providers | ZDR | No Training | Release Date |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

| ![arcee-ai logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Farcee-ai-256.png&w=48&q=75) [arcee-ai/trinity-mini](/ai-gateway/models/trinity-mini) | 131K |  |  | $0.04/M | $0.15/M |  | — |  | ![arcee-ai logo](/vc-ap-vercel-marketing/_next/image?url=https%3A%2F%2F7nyt0uhk7sse4zvn.public.blob.vercel-storage.com%2Fdocs-assets%2Fstatic%2Fdocs%2Fai-gateway%2Flogos%2Farcee-ai-256.png&w=48&q=75) |  |  | 12/01/2025 |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |

## [Copy link to heading](#about-trinity-large-thinking)About Trinity Large Thinking

Trinity Large Thinking is a 398B-parameter sparse mixture-of-experts model with about 13B active parameters per token. It is built on Trinity Large Base and emits intermediate reasoning in the output when the task calls for it.

Use it when you need audit-friendly, stepwise reasoning more than the shortest possible reply. Choose Trinity Large Preview when you do not need trace-heavy output.

Check https://docs.arcee.ai/language-models/trinity-large-thinking for the latest capabilities, limits, and rates. Reasoning depth trades off against speed and token count, so validate latency and cost on your prompts before you commit to architecture.

## [Copy link to heading](#what-to-consider-when-choosing-a-provider)What To Consider When Choosing a Provider

- Configuration: Reasoning traces add output tokens. Budget for longer completions, stream responses, and compare $0.25 per million input tokens and $0.9 per million output tokens to your cost model.
- Zero Data Retention: Zero Data Retention is offered on a per-provider and model basis. See the [documentation](https://vercel.com/docs/ai-gateway/security-and-compliance/zdr) for details.
- Authentication: AI Gateway authenticates requests using an [API key](https://vercel.com/docs/ai-gateway/authentication-and-byok#api-key-authentication) or [OIDC token](https://vercel.com/docs/ai-gateway/authentication-and-byok#oidc-token-authentication). You do not need to manage provider credentials directly.

## [Copy link to heading](#when-to-use-trinity-large-thinking)When to Use Trinity Large Thinking

### Best for

- Auditable enterprise workflows: Step-by-step reasoning you can log and review
- Analytical error reduction: Tasks where visible intermediate steps lower error rates
- Traceable code review: Debugging or refactoring where the model's steps run alongside your own review
- Inspectable decision flows: Multi-step pipelines where each stage must be reviewable

### Consider alternatives when

- Short single-turn replies: Trinity Large Preview answers faster with fewer tokens
- Minimal output budget: Reasoning traces add tokens that may not fit your cost model
- Cost-dominant workloads: Trinity Mini meets a lower price point when its quality bar is enough

## [Copy link to heading](#conclusion)Conclusion

Trinity Large Thinking adds trace-oriented, post-trained reasoning on top of Arcee AI's Trinity Large Base stack in AI Gateway. Choose it when auditable steps matter; choose Trinity Large Preview when you do not need that overhead.