# GPT-5.4 vs GPT-5.6 Terra

> Side-by-side benchmark comparison for GPT-5.4 and GPT-5.6 Terra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-vs-gpt-5-6-terra
- Last updated: September 24, 2026

- Shared sourced benchmarks: 16
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.6 Terra if you want the stronger benchmark profile. GPT-5.4 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.6 Terra leads overall 72.58 to 68.51.
- The clearest category separation is in mathematics, where the averages are 64.4 for GPT-5.4 and 96.8 for GPT-5.6 Terra.
- The biggest single benchmark swing is FrontierMath v2 (Tier 4) in Mathematics, with scores of 27.100% and 68.300%.
- GPT-5.6 Terra is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | GPT-5.4 | GPT-5.6 Terra |
|----------|----------|----------|
| Creator | OpenAI | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 1.05M |
| Overall Score | 68.51 | 72.58 |
| Benchmarks Covered | 38 | 32 |
| Pricing (input/output) | $2.50 / $15.00 | $2.00 / $12.00 |

## Category Breakdown

### Agentic

- Winner: GPT-5.6 Terra
- GPT-5.4 public-lane score: 49.4 (Supported · #36/105)
- GPT-5.6 Terra public-lane score: 59.5 (Supported · #18/105)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| CyberGym | 79.0% | 81.8% | GPT-5.6 Terra |
| BrowseComp | 82.7% | 87.5% | GPT-5.6 Terra |
| OSWorld-Verified | 75% | Coming soon | Coming soon |
| MCP Atlas | 70.6% | Coming soon | Coming soon |
| Toolathlon | 54.6% | 53.1% | GPT-5.4 |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | Coming soon | Coming soon |
| DeepSearchQA | 73.6% | Coming soon | Coming soon |
| Gert Labs | 64.89% | Coming soon | Coming soon |
| ResearchClawBench | 15.3% | Coming soon | Coming soon |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | 23.2% | GPT-5.6 Terra |
| ApprenticeBench | 11% | 16% | GPT-5.6 Terra |
| Terminal-Bench 3.0 | Coming soon | 20.8% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 87.4% | Coming soon |
| OSWorld 2.0 | Coming soon | 50.2% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 77.5% | Coming soon |

### Coding

- Winner: GPT-5.6 Terra
- GPT-5.4 public-lane score: 50.7 (Supported · #38/135)
- GPT-5.6 Terra public-lane score: 64.7 (Supported · #8/135)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | 63.4% | GPT-5.6 Terra |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 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 |

### Reasoning

- Winner: GPT-5.6 Terra
- GPT-5.4 public-lane score: 60.5 (#14/19)
- GPT-5.6 Terra public-lane score: 65.4 (#12/19)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | 83.9% | GPT-5.6 Terra |
| ARC-AGI-3 | 0.2% | 0.8% | GPT-5.6 Terra |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 public-lane score: 69.3 (#21/50)
- GPT-5.6 Terra public-lane score: 77.2 (#16/50)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | 80.7% | GPT-5.4 |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | 82% | GPT-5.4 |
| CharXiv | 82.8% | Coming soon | Coming soon |
| ERQA | 65.4% | Coming soon | Coming soon |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | Coming soon | Coming soon |
| ZeroBench | 41.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |

### Knowledge

- Winner: GPT-5.6 Terra
- GPT-5.4 public-lane score: 66.8 (Supported · #16/158)
- GPT-5.6 Terra public-lane score: 71.1 (Supported · #9/158)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | 92.9% | GPT-5.6 Terra |
| HLE | 52.1% | Coming soon | Coming soon |
| HLE w/o tools | 39.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | 92.9% | GPT-5.6 Terra |
| HealthBench Hard | 40.1% | 32.7% | GPT-5.4 |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | 57.7% | GPT-5.6 Terra |
| HLE-Verified | Coming soon | 51.1% | Coming soon |
| LABBench2 | Coming soon | 81.2% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 90.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.7% | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.4 public-lane score: 89.2 (#19/124)
- GPT-5.6 Terra public-lane score: 85.7 (#35/124)

### Mathematics

- Winner: Not comparable
- GPT-5.4 public-lane score: 64.4 (Unranked · 2 rankable rows)
- GPT-5.6 Terra public-lane score: 96.8 (Unranked · 3 rankable rows)

| Benchmark | GPT-5.4 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | 84.900% | GPT-5.6 Terra |
| FrontierMath v2 (Tier 4) | 27.100% | 68.300% | GPT-5.6 Terra |
| FrontierMath (legacy) | Coming soon | 84.9% | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 or GPT-5.6 Terra?

GPT-5.6 Terra is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.4 and GPT-5.6 Terra?

The widest category gap is in mathematics, where the averages are 64.4 for GPT-5.4 and 96.8 for GPT-5.6 Terra.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 38 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.6 Terra cover on BenchLM?

GPT-5.6 Terra currently has 32 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [GPT-5.6 Terra vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-gpt-5-6-terra)
- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [GPT-5.6 Terra vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-6-terra)

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [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)