# Agents-A1-4B vs GPT-5.6 Terra

> Side-by-side benchmark comparison for Agents-A1-4B and GPT-5.6 Terra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/agents-a1-4b-vs-gpt-5-6-terra
- Last updated: September 10, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Agents-A1-4B and GPT-5.6 Terra 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.
- Agents-A1-4B has the lower published output-token price.
- GPT-5.6 Terra has the larger published context window at 1.05M.

## Model Snapshot

| Property | Agents-A1-4B | GPT-5.6 Terra |
|----------|----------|----------|
| Creator | InternScience | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1.05M |
| Independent public score (not head-to-head) | null | 71.13 |
| Benchmarks Covered | 11 | 31 |
| Pricing (input/output) | $0.00 / $0.00 | $2.50 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 60.2 (Supported · #20/152)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| BrowseComp | 66.8% | 87.5% | GPT-5.6 Terra |
| GAIA | 95.1% | Coming soon | Coming soon |
| MLE-Bench Lite | 22.7% | Coming soon | Coming soon |
| τ²-bench results | 78.2% | Coming soon | Coming soon |
| VITA-Bench | 40.3% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | Coming soon | 20.8% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 87.4% | Coming soon |
| OSWorld 2.0 | Coming soon | 50.2% | Coming soon |
| CyberGym | Coming soon | 81.8% | Coming soon |
| ExploitGym | Coming soon | 23.2% | Coming soon |
| Toolathlon | Coming soon | 53.1% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 77.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 67 (Supported · #8/151)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| SciCode | 29.6% | Coming soon | Coming soon |
| LiveCodeBench v6 | 59.6% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 63.4% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 87.4% | Coming soon |
| DeepSWE | Coming soon | 69.6% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 55.8% | Coming soon |
| cursorBench32 | Coming soon | 64.9% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 85.9% | Coming soon |
| SWE-bench (Vals) | Coming soon | 95.4% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 77.1 (#15/48)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 80.7% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 82% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 63.7 (#14/20)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 52.1% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 83.9% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.8% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 69.2 (Supported · #16/183)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience Research | 33.3% | Coming soon | Coming soon |
| GPQA | Coming soon | 92.9% | Coming soon |
| GPQA-D | Coming soon | 92.9% | Coming soon |
| HLE-Verified | Coming soon | 51.1% | Coming soon |
| LABBench2 | Coming soon | 81.2% | Coming soon |
| HealthBench Professional | Coming soon | 57.7% | Coming soon |
| HealthBench Hard | Coming soon | 32.7% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 90.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 87.1 (#34/123)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 69.1% | Coming soon | Coming soon |
| IFEval | 94.8% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Agents-A1-4B public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 97 (Unranked · 3 rankable rows)

| Benchmark | Agents-A1-4B | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | Coming soon | 84.9% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 84.900% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 68.300% | Coming soon |

## FAQ

### Is there enough evidence to pick between Agents-A1-4B and GPT-5.6 Terra?

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

- [Agents-A1-4B vs Agents-A1](/compare/agents-a1-vs-agents-a1-4b)
- [GPT-5.6 Terra vs Agents-A1](/compare/agents-a1-vs-gpt-5-6-terra)
- [Agents-A1-4B vs Agents-A1-F16-GGUF](/compare/agents-a1-4b-vs-agents-a1-f16-gguf)
- [GPT-5.6 Terra vs Agents-A1-F16-GGUF](/compare/agents-a1-f16-gguf-vs-gpt-5-6-terra)

## Explore More

- [Agents-A1-4B profile](/models/agents-a1-4b)
- [GPT-5.6 Terra profile](/models/gpt-5-6-terra)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)