Tri-21B-think Preview
Intelligence
20
#255/521
Coding
7.4
#362/427
Math
—
Speed
—
Pricing
—
Tri-21B-think Preview is Trillion Labs’ model designed for advanced cognitive tasks. It features an Intelligence Index of 20 and a Coding Index of 7.4, making it suitable for professional users in need of sophisticated analytical capabilities.
When to Use Tri-21B-think Preview
✓ Best For
- Complex data analysis
- Software development assistance
- Natural language processing tasks
✗ Not Ideal For
- Basic computational tasks
- Users requiring high-speed processing
How Tri-21B-think Preview Compares
Intelligence Index · Higher is better
OpenAIAlibabaTrillion Labs
Benchmark Profile
Coding Index
NVIDIASarvamTrillion LabsGoogleAlibaba
Intelligence · Coding · Math
Intelligence
Coding
Math
All Benchmark Scores (9)
| Benchmark | Score | |
|---|---|---|
| Intelligence Index | 20 | |
| Coding Index | 7.4 | |
| GPQA | 538% | |
| HLE | 57% | |
| SciCode | 17.8% | |
| IFBench | 47.1% | |
| LCR | 14.7% | |
| TerminalBench Hard | 2.3% | |
| Tau2 | 93.3% |
Data: Artificial Analysis · Updated: March 27, 2026
Frequently Asked Questions (15)
When was Tri-21B-think Preview released?
Tri-21B-think Preview was released on February 10, 2026.
Who created Tri-21B-think Preview?
Tri-21B-think Preview was created by Trillion Labs.
How intelligent is Tri-21B-think Preview?
Tri-21B-think Preview scores 20 on the Artificial Analysis Intelligence Index, placing it well above average among other open weight models of similar size (median: 15).
How verbose is Tri-21B-think Preview?
When evaluated on the Intelligence Index, Tri-21B-think Preview generated 130M output tokens, which is at the higher end compared to other open weight models of similar size (median: 19M).
Is Tri-21B-think Preview a reasoning model?
Yes, Tri-21B-think Preview is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
What input modalities does Tri-21B-think Preview support?
Tri-21B-think Preview supports text input.
What output modalities does Tri-21B-think Preview support?
Tri-21B-think Preview supports text output.
Can Tri-21B-think Preview process images?
No, Tri-21B-think Preview does not support image input. It can only process text.
Is Tri-21B-think Preview multimodal?
No, Tri-21B-think Preview is not multimodal. It only supports text input.
What is the context window of Tri-21B-think Preview?
Tri-21B-think Preview has a context window of 32k tokens. This determines how much text and conversation history the model can process in a single request.
Is Tri-21B-think Preview open source?
Yes, Tri-21B-think Preview is open weights. The model weights are publicly available and can be downloaded for self-hosting.
How many parameters does Tri-21B-think Preview have?
Tri-21B-think Preview has 21 billion parameters.
What is the license for Tri-21B-think Preview?
Tri-21B-think Preview is released under the Apache 2.0 license. This license allows commercial use.
How does Tri-21B-think Preview perform on benchmarks?
Tri-21B-think Preview achieves a score of 20 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Is Tri-21B-think Preview available via API?
Tri-21B-think Preview is an open weights model that can be self-hosted.
