# GPT-6.1 Sol vs GPT-6.1 Terra

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

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

- Shared sourced benchmarks: 6
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

GPT-6.1 Sol leads by point estimate. Conditional score ranges do not establish rank confidence. Choose using the category evidence and your own workload tests.

## Summary

- GPT-6.1 Sol has the higher overall point estimate 84.3 to 75.87. Conditional score ranges do not establish rank confidence.
- The clearest category separation is in knowledge, where the averages are 85.9 for GPT-6.1 Sol and 74.9 for GPT-6.1 Terra.
- The biggest single benchmark swing is HealthBench (raw) in Knowledge, with scores of 56.7% and 51.1%.
- GPT-6.1 Terra is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-6.1 Sol | GPT-6.1 Terra |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1.05M |
| Overall Score | 84.3 | 75.87 |
| Benchmarks Covered | 22 | 10 |
| Pricing (input/output) | $2.00 / $10.00 | $1.00 / $5.00 |

## Category Breakdown

### Agentic

- Winner: Directional only
- GPT-6.1 Sol public-lane score: 77.5 (Estimated · #5/133)
- GPT-6.1 Terra public-lane score: 72.4 (Estimated · #8/133)

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| AutomationBench | 36.1% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 57.0% | 58.3% | GPT-6.1 Terra |
| ExploitGym | 35.1% | Coming soon | Coming soon |
| MazeBench | 17% | Coming soon | Coming soon |
| Hermes Index | 57.1% | Coming soon | Coming soon |
| Hermes Bench | 73.9% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 50.30% | Coming soon |
| Agents' Last Exam | Coming soon | 60.0% | Coming soon |
| OSWorld 2.1 Offline | Coming soon | 74.2% | Coming soon |

### Coding

- Winner: Not comparable
- GPT-6.1 Sol public-lane score: 71.4 (Supported · #8/154)
- GPT-6.1 Terra public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| DeepSWE | 71.9% | Coming soon | Coming soon |
| Bug Hunt Bench | 44.3 fixes | Coming soon | Coming soon |

### Reasoning

- Winner: Not comparable
- GPT-6.1 Sol public-lane score: 90.5 (#2/26)
- GPT-6.1 Terra public-lane score: 81.8 (Unranked · 2 rankable rows)

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| STEMBench | 2.76 | Coming soon | Coming soon |
| ARC-AGI-1 | 96.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 94.2% | Coming soon | Coming soon |
| ARC-AGI-3 | 52.7% | Coming soon | Coming soon |
| ARC-AGI-3 Provider Adapter | 96.18% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GPT-6.1 Sol public-lane score: 88.2 (Unranked · 1 rankable row)
- GPT-6.1 Terra public-lane score: 91.6 (#4/58)

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench Pro | 12% | Coming soon | Coming soon |
| ParseBench | 69.70% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 85.5% | Coming soon |

### Knowledge

- Winner: GPT-6.1 Sol
- GPT-6.1 Sol public-lane score: 85.9 (Supported · #3/188)
- GPT-6.1 Terra public-lane score: 74.9 (Supported · #12/188)

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | 56.7% | 51.1% | GPT-6.1 Sol |
| HealthBench (length-adjusted) | 58.5% | 55.1% | GPT-6.1 Sol |
| HealthBench Professional | 64.2% | 62.7% | GPT-6.1 Sol |
| HealthBench Professional (raw) | 67.2% | 64.2% | GPT-6.1 Sol |
| HealthBench Hard | 36.2% | 31.4% | GPT-6.1 Sol |

### Mathematics

- Winner: Not comparable
- GPT-6.1 Sol public-lane score: 97.3 (Unranked · 2 rankable rows)
- GPT-6.1 Terra public-lane score: Coming soon

| Benchmark | GPT-6.1 Sol | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 93.684% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 100.000% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-6.1 Sol or GPT-6.1 Terra?

GPT-6.1 Sol has the higher overall point estimate. Conditional score ranges do not establish rank confidence.

### Where is the biggest gap between GPT-6.1 Sol and GPT-6.1 Terra?

The widest category gap is in knowledge, where the averages are 85.9 for GPT-6.1 Sol and 74.9 for GPT-6.1 Terra.

### How many benchmarks does GPT-6.1 Sol cover on BenchLM?

GPT-6.1 Sol currently has 22 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-6.1 Terra cover on BenchLM?

GPT-6.1 Terra currently has 10 sourced benchmark scores on BenchLM.

## Related Comparisons

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

## Explore More

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