# Grok 4.1 Fast vs Trinity-Large-Thinking

> Side-by-side benchmark comparison for Grok 4.1 Fast and Trinity-Large-Thinking across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-1-fast-vs-trinity-large-thinking
- Last updated: September 29, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Grok 4.1 Fast and Trinity-Large-Thinking share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Grok 4.1 Fast has the lower published output-token price.
- Grok 4.1 Fast has the larger published context window at 1M.

## Model Snapshot

| Property | Grok 4.1 Fast | Trinity-Large-Thinking |
|----------|----------|----------|
| Creator | xAI | Arcee AI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 512K |
| Independent public score (not head-to-head) | 36.36 | 34.23 |
| Benchmarks Covered | 1 | 5 |
| Pricing (input/output) | $0.20 / $0.50 | $0.25 / $0.90 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: Coming soon
- Trinity-Large-Thinking public-lane score: 17.7 (Estimated · #104/117)

| Benchmark | Grok 4.1 Fast | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 47.32% | 32.55% | Grok 4.1 Fast |

### Coding

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: Coming soon
- Trinity-Large-Thinking public-lane score: 21 (Supported · #119/142)

| Benchmark | Grok 4.1 Fast | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified* | Coming soon | 63.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: 43.7 (Unranked · 2 rankable rows)
- Trinity-Large-Thinking public-lane score: 48.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: 32.5 (Unranked · 1 rankable row)
- Trinity-Large-Thinking public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: 32.4 (Estimated · #128/168)
- Trinity-Large-Thinking public-lane score: 35.9 (Estimated · #114/168)

| Benchmark | Grok 4.1 Fast | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 76.3% | Coming soon |
| MMLU-Pro (Arcee) | Coming soon | 83.4% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: 40.4 (#100/124)
- Trinity-Large-Thinking public-lane score: 66.3 (#68/124)

### Mathematics

- Winner: Insufficient shared evidence
- Grok 4.1 Fast public-lane score: Coming soon
- Trinity-Large-Thinking public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| AIME25 (Arcee) | Coming soon | 96.3% | Coming soon |

## FAQ

### Is there enough evidence to pick between Grok 4.1 Fast and Trinity-Large-Thinking?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Grok 4.1 Fast vs Grok 4.1 Fast (Reasoning)](/compare/grok-4-1-fast-vs-grok-4-1-fast-reasoning)
- [Trinity-Large-Thinking vs Grok 4.1 Fast (Reasoning)](/compare/grok-4-1-fast-reasoning-vs-trinity-large-thinking)
- [Grok 4.1 Fast vs Trinity-Large-Preview](/compare/grok-4-1-fast-vs-trinity-large-preview)
- [Trinity-Large-Thinking vs Trinity-Large-Preview](/compare/trinity-large-preview-vs-trinity-large-thinking)

## Explore More

- [Grok 4.1 Fast profile](/models/grok-4-1-fast)
- [Trinity-Large-Thinking profile](/models/trinity-large-thinking)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)