# GPT-6.1 Terra vs Inkling-Small

> Side-by-side benchmark comparison for GPT-6.1 Terra and Inkling-Small across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-6-1-terra-vs-inkling-small
- Last updated: October 26, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-6.1 Terra and Inkling-Small 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.
- Inkling-Small has the lower published output-token price.
- GPT-6.1 Terra has the larger published context window at 1.05M.

## Model Snapshot

| Property | GPT-6.1 Terra | Inkling-Small |
|----------|----------|----------|
| Creator | OpenAI | Thinking Machines Lab |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Hybrid |
| Context | 1.05M | 1M |
| Independent public score (not head-to-head) | 75.87 | 52.49 |
| Benchmarks Covered | 10 | 28 |
| Pricing (input/output) | $1.00 / $5.00 | $0.58 / $1.44 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: 72.4 (Estimated · #8/133)
- Inkling-Small public-lane score: 36.4 (Supported · #81/133)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 4.0 | 50.30% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 58.3% | Coming soon | Coming soon |
| Agents' Last Exam | 60.0% | Coming soon | Coming soon |
| OSWorld 2.1 Offline | 74.2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 64.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |
| MCP Atlas | Coming soon | 79.6% | Coming soon |
| Toolathlon-Verified | Coming soon | 54.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 55.1% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: Coming soon
- Inkling-Small public-lane score: 37.9 (Supported · #74/154)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |
| SWE-bench Pro | Coming soon | 55.9% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 64.7% | Coming soon |
| SciCode | Coming soon | 48.7% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.9% | Coming soon |
| SWE-bench (Vals) | Coming soon | 82.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: 81.8 (Unranked · 2 rankable rows)
- Inkling-Small public-lane score: 55 (Unranked · 4 rankable rows)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 40.1% | Coming soon |
| CritPt | Coming soon | 8.3% | Coming soon |
| ARC-AGI-1 | Coming soon | 84.00% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: 91.6 (#4/58)
- Inkling-Small public-lane score: 67.5 (#41/58)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 85.5% | 74% | GPT-6.1 Terra |
| CharXiv | Coming soon | 81.3% | Coming soon |
| CharXiv w/o tools | Coming soon | 77.4% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: 74.9 (Supported · #12/188)
- Inkling-Small public-lane score: 54 (Supported · #64/188)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | 51.1% | Coming soon | Coming soon |
| HealthBench (length-adjusted) | 55.1% | Coming soon | Coming soon |
| HealthBench Professional | 62.7% | Coming soon | Coming soon |
| HealthBench Professional (raw) | 64.2% | Coming soon | Coming soon |
| HealthBench Hard | 31.4% | Coming soon | Coming soon |
| GPQA | Coming soon | 89.5% | Coming soon |
| GPQA-D | Coming soon | 89.5% | Coming soon |
| HLE | Coming soon | 47.8% | Coming soon |
| HLE w/o tools | Coming soon | 31.6% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 83.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 85.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: Coming soon
- Inkling-Small public-lane score: 93.3 (#10/155)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 82.2% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-6.1 Terra public-lane score: Coming soon
- Inkling-Small public-lane score: 69.8 (#5/12)

| Benchmark | GPT-6.1 Terra | Inkling-Small | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 95.5% | Coming soon |
| HMMT Feb 2026 | Coming soon | 90.2% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 46.316% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 17.073% | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-6.1 Terra and Inkling-Small?

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-6.1 Terra vs GPT-6 Astra](/compare/gpt-6-1-terra-vs-gpt-6-astra)
- [Inkling-Small vs GPT-6 Astra](/compare/gpt-6-astra-vs-inkling-small)
- [GPT-6.1 Terra vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-gpt-6-1-terra)
- [Inkling-Small vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-inkling-small)

## Explore More

- [GPT-6.1 Terra profile](/models/gpt-6-1-terra)
- [Inkling-Small profile](/models/inkling-small)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)