# Gemini 4 Hydrogen vs GPT-6.1 Terra

> Side-by-side benchmark comparison for Gemini 4 Hydrogen and GPT-6.1 Terra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-4-hydrogen-vs-gpt-6-1-terra
- Last updated: November 12, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemini 4 Hydrogen and GPT-6.1 Terra share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-6.1 Terra has the lower published output-token price.
- GPT-6.1 Terra has the larger published context window at 1.05M.

## Model Snapshot

| Property | Gemini 4 Hydrogen | GPT-6.1 Terra |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Independent public score (not head-to-head) | null | 79.83 |
| Benchmarks Covered | 5 | 17 |
| Pricing (input/output) | $1.50 / $7.50 | $1.00 / $5.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 75 (Estimated · #6/135)

| Benchmark | Gemini 4 Hydrogen | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| OSWorld 2.1 Offline | 77.6% | 74.2% | Gemini 4 Hydrogen |
| MKA | 53.4% | Coming soon | Coming soon |
| Terminal-Bench-Science 0.1 | 51.4% | 58.3% | GPT-6.1 Terra |
| Terminal-Bench 4.0 | Coming soon | 50.30% | Coming soon |
| Agents' Last Exam | Coming soon | 60.0% | Coming soon |
| MazeBench | Coming soon | 16% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 69.8 (Supported · #10/161)

| Benchmark | Gemini 4 Hydrogen | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierCode 2.0 | 38.2% | Coming soon | Coming soon |
| VulcanBench Frontier v4 | Coming soon | 90.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 75.6 (Supported · #10/160)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 77.4 (Supported · #7/67)

| Benchmark | Gemini 4 Hydrogen | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| Chartography (no tools) | 66.6% | Coming soon | Coming soon |
| ParseBench | Coming soon | 73.64% | Coming soon |
| ExtractBench Pro | Coming soon | 27% | Coming soon |
| ExtractBench (LlamaIndex) | Coming soon | 94.28% | Coming soon |
| MMMU-Pro | Coming soon | 85.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 77.5 (Supported · #11/180)

| Benchmark | Gemini 4 Hydrogen | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| HealthBench (raw) | Coming soon | 51.1% | Coming soon |
| HealthBench (length-adjusted) | Coming soon | 55.1% | Coming soon |
| HealthBench Professional | Coming soon | 62.7% | Coming soon |
| HealthBench Professional (raw) | Coming soon | 64.2% | Coming soon |
| HealthBench Hard | Coming soon | 31.4% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 4 Hydrogen public-lane score: Coming soon
- GPT-6.1 Terra public-lane score: 92.9 (Unranked · 2 rankable rows)

| Benchmark | Gemini 4 Hydrogen | GPT-6.1 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 90.877% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 92.683% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemini 4 Hydrogen and GPT-6.1 Terra?

Not yet. The models share only 2 sourced benchmark rows, 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

- [Gemini 4 Hydrogen vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-gemini-4-hydrogen)
- [GPT-6.1 Terra vs Gemini 4 Carbon](/compare/gemini-4-carbon-vs-gpt-6-1-terra)
- [Gemini 4 Hydrogen vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gemini-4-hydrogen)
- [GPT-6.1 Terra vs Gemini 4 Argon](/compare/gemini-4-argon-vs-gpt-6-1-terra)

## Explore More

- [Gemini 4 Hydrogen profile](/models/gemini-4-hydrogen)
- [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)