# GPT-5.1 vs Trinity-Large-Thinking

> Side-by-side benchmark comparison for GPT-5.1 and Trinity-Large-Thinking across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-1-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: GPT-5.1 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.
- Trinity-Large-Thinking has the lower published output-token price.
- Trinity-Large-Thinking has the larger published context window at 512K.

## Model Snapshot

| Property | GPT-5.1 | Trinity-Large-Thinking |
|----------|----------|----------|
| Creator | OpenAI | Arcee AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 512K |
| Independent public score (not head-to-head) | 58.29 | 34.23 |
| Benchmarks Covered | 4 | 5 |
| Pricing (input/output) | $1.25 / $10.00 | $0.25 / $0.90 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: Coming soon
- Trinity-Large-Thinking public-lane score: 17.7 (Estimated · #104/117)

| Benchmark | GPT-5.1 | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 41.24% | 32.55% | GPT-5.1 |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 38.8 (Supported · #64/142)
- Trinity-Large-Thinking public-lane score: 21 (Supported · #119/142)

| Benchmark | GPT-5.1 | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 24.61% | Coming soon | Coming soon |
| SWE-bench Verified* | Coming soon | 63.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 77.3 (Unranked · 2 rankable rows)
- Trinity-Large-Thinking public-lane score: 48.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 72.3 (Unranked · 1 rankable row)
- Trinity-Large-Thinking public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 52.3 (Estimated · #57/168)
- Trinity-Large-Thinking public-lane score: 35.9 (Estimated · #114/168)

| Benchmark | GPT-5.1 | 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
- GPT-5.1 public-lane score: 87.9 (#27/124)
- Trinity-Large-Thinking public-lane score: 66.3 (#68/124)

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.1 public-lane score: 49 (Unranked · 2 rankable rows)
- Trinity-Large-Thinking public-lane score: Coming soon

| Benchmark | GPT-5.1 | Trinity-Large-Thinking | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 31.034% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.500% | Coming soon | Coming soon |
| AIME25 (Arcee) | Coming soon | 96.3% | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-5.1 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

- [GPT-5.1 vs Trinity-Large-Preview](/compare/gpt-5-1-vs-trinity-large-preview)
- [Trinity-Large-Thinking vs Trinity-Large-Preview](/compare/trinity-large-preview-vs-trinity-large-thinking)
- [GPT-5.1 vs GPT-6 Astra](/compare/gpt-5-1-vs-gpt-6-astra)
- [Trinity-Large-Thinking vs GPT-6 Astra](/compare/gpt-6-astra-vs-trinity-large-thinking)

## Explore More

- [GPT-5.1 profile](/models/gpt-5-1)
- [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)