# GLM-5.2 vs GPT-5.6 Terra

> Side-by-side benchmark comparison for GLM-5.2 and GPT-5.6 Terra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-2-vs-gpt-5-6-terra
- Last updated: September 24, 2026

- Shared sourced benchmarks: 13
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.6 Terra if you want the stronger benchmark profile. GLM-5.2 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 62.52.
- The clearest category separation is in mathematics, where the averages are 80.7 for GLM-5.2 and 96.8 for GPT-5.6 Terra.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 69.5% and 85.9%.
- GLM-5.2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.6 Terra also has the larger context window at 1.05M.

## Model Snapshot

| Property | GLM-5.2 | GPT-5.6 Terra |
|----------|----------|----------|
| Creator | Z.AI | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 62.52 | 72.58 |
| Benchmarks Covered | 25 | 32 |
| Pricing (input/output) | $1.40 / $4.40 | $2.00 / $12.00 |

## Category Breakdown

### Agentic

- Winner: GPT-5.6 Terra
- GLM-5.2 public-lane score: 55.6 (Supported · #26/105)
- GPT-5.6 Terra public-lane score: 59.5 (Supported · #18/105)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 4.6% | 20.8% | GPT-5.6 Terra |
| Terminal-Bench 2.1 | 81.0% | 87.4% | GPT-5.6 Terra |
| MCP Atlas | 76.8% | Coming soon | Coming soon |
| Toolathlon | 48.2% | 53.1% | GPT-5.6 Terra |
| ResearchClawBench | 20.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | 77.5% | GPT-5.6 Terra |
| BrowseComp | Coming soon | 87.5% | 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 |
| ApprenticeBench | Coming soon | 16% | Coming soon |

### Coding

- Winner: GPT-5.6 Terra
- GLM-5.2 public-lane score: 57.2 (Supported · #22/135)
- GPT-5.6 Terra public-lane score: 64.7 (Supported · #8/135)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 62.1% | 63.4% | GPT-5.6 Terra |
| NL2Repo | 48.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 81.0% | 87.4% | GPT-5.6 Terra |
| ProgramBench | 63.7% | Coming soon | Coming soon |
| cursorBench32 | 55.0% | 64.9% | GPT-5.6 Terra |
| OpenHarmony Bench | 58.4% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 69.5% | 85.9% | GPT-5.6 Terra |
| SWE-bench (Vals) | 82.8% | 95.4% | GPT-5.6 Terra |
| DeepSWE | Coming soon | 69.6% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 55.8% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |

### Reasoning

- Winner: Not comparable
- GLM-5.2 public-lane score: 75.9 (Unranked · 2 rankable rows)
- GPT-5.6 Terra public-lane score: 65.4 (#12/19)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| CritPt | 20.9% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 83.9% | Coming soon |
| ARC-AGI-3 | Coming soon | 0.8% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- GLM-5.2 public-lane score: Coming soon
- GPT-5.6 Terra public-lane score: 77.2 (#16/50)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 80.7% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 82% | Coming soon |

### Knowledge

- Winner: GPT-5.6 Terra
- GLM-5.2 public-lane score: 57.2 (Supported · #40/158)
- GPT-5.6 Terra public-lane score: 71.1 (Supported · #9/158)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 91.2% | 92.9% | GPT-5.6 Terra |
| GPQA-D | 91.2% | 92.9% | GPT-5.6 Terra |
| HLE | 54.7% | Coming soon | Coming soon |
| HLE w/o tools | 40.5% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 85.6% | 90.9% | GPT-5.6 Terra |
| MMLU-Pro (Vals) | 86.7% | 86.7% | Tie |
| 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 |

### Instruction Following

- Winner: Directional only
- GLM-5.2 public-lane score: 88.5 (#23/124)
- GPT-5.6 Terra public-lane score: 85.7 (#35/124)

### Mathematics

- Winner: Not comparable
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)
- GPT-5.6 Terra public-lane score: 96.8 (Unranked · 3 rankable rows)

| Benchmark | GLM-5.2 | GPT-5.6 Terra | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 99.2% | Coming soon | Coming soon |
| HMMT Nov 2025 | 94.4% | Coming soon | Coming soon |
| HMMT Feb 2026 | 92.5% | Coming soon | Coming soon |
| MMAnswerBench | 91.0% | Coming soon | Coming soon |
| 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

### Which is better overall, GLM-5.2 or GPT-5.6 Terra?

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

### Where is the biggest gap between GLM-5.2 and GPT-5.6 Terra?

The widest category gap is in mathematics, where the averages are 80.7 for GLM-5.2 and 96.8 for GPT-5.6 Terra.

### How many benchmarks does GLM-5.2 cover on BenchLM?

GLM-5.2 currently has 25 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

- [GLM-5.2 vs GLM-5.3](/compare/glm-5-2-vs-glm-5-3)
- [GPT-5.6 Terra vs GLM-5.3](/compare/glm-5-3-vs-gpt-5-6-terra)
- [GLM-5.2 vs GLM-5.3-Flash](/compare/glm-5-2-vs-glm-5-3-flash)
- [GPT-5.6 Terra vs GLM-5.3-Flash](/compare/glm-5-3-flash-vs-gpt-5-6-terra)

## Explore More

- [GLM-5.2 profile](/models/glm-5-2)
- [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)