# Claude Opus 4.8 vs GLM-5.2

> Side-by-side benchmark comparison for Claude Opus 4.8 and GLM-5.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-8-vs-glm-5-2
- Last updated: September 14, 2026

- Shared sourced benchmarks: 17
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.8 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

- Claude Opus 4.8 leads overall 72.29 to 68.19.
- The clearest category separation is in reasoning, where the averages are 55.5 for Claude Opus 4.8 and 74.8 for GLM-5.2.
- The biggest single benchmark swing is LiveCodeBench (Vals) in Coding, with scores of 87.8% and 69.5%.
- GLM-5.2 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Claude Opus 4.8 | GLM-5.2 |
|----------|----------|----------|
| Creator | Anthropic | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | 72.29 | 68.19 |
| Benchmarks Covered | 38 | 25 |
| Pricing (input/output) | $5.00 / $25.00 | $1.40 / $4.40 |

## Category Breakdown

### Agentic

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 62.5 (Supported · #14/153)
- GLM-5.2 public-lane score: 58.5 (Supported · #29/153)

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 21.1% | 4.6% | Claude Opus 4.8 |
| Terminal-Bench 2.0 | 74.6% | 81% | GLM-5.2 |
| BrowseComp | 84.3% | Coming soon | Coming soon |
| DeepSearchQA | 93.1% | Coming soon | Coming soon |
| OSWorld-Verified | 83.4% | Coming soon | Coming soon |
| Finance Agent v2 | 53.9% | Coming soon | Coming soon |
| MCP Atlas | 82.2% | 76.8% | Claude Opus 4.8 |
| Toolathlon | 59.9% | 48.2% | Claude Opus 4.8 |
| Gert Labs | 72.97% | Coming soon | Coming soon |
| ResearchClawBench | 21.1% | 20.7% | Claude Opus 4.8 |
| OSWorld 2.0 | 20.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 71.9% | 67.8% | Claude Opus 4.8 |

### Coding

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 66.5 (Supported · #12/152)
- GLM-5.2 public-lane score: 61 (Supported · #19/152)

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 88.6% | Coming soon | Coming soon |
| SWE-bench Pro | 69.2% | 62.1% | Claude Opus 4.8 |
| SWE Multilingual | 84.4% | Coming soon | Coming soon |
| SWE Multimodal | 38.4% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 74.6% | 81.0% | GLM-5.2 |
| cursorBench31 | 58.4% | Coming soon | Coming soon |
| cursorBench32 | 62.3% | 55.0% | Claude Opus 4.8 |
| FrontierCode 1.1 Main | 46.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.8% | 69.5% | Claude Opus 4.8 |
| SWE-bench (Vals) | 88.6% | 82.8% | Claude Opus 4.8 |
| NL2Repo | Coming soon | 48.9% | Coming soon |
| ProgramBench | Coming soon | 63.7% | Coming soon |
| OpenHarmony Bench | Coming soon | 58.4% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 87.8 (#3/48)
- GLM-5.2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 66.2% | Coming soon | Coming soon |
| ScreenSpot Pro | 87.9% | Coming soon | Coming soon |
| CharXiv | 89.9% | Coming soon | Coming soon |
| CharXiv w/o tools | 80.5% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 55.5 (#18/20)
- GLM-5.2 public-lane score: 74.8 (Unranked · 2 rankable rows)

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 72.1% | Coming soon | Coming soon |
| ARC-AGI-3 | 1.5% | Coming soon | Coming soon |
| CritPt | Coming soon | 20.9% | Coming soon |

### Knowledge

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 71.4 (Supported · #9/183)
- GLM-5.2 public-lane score: 60.7 (Supported · #35/183)

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93.6% | 91.2% | Claude Opus 4.8 |
| GPQA-D | 93.6% | 91.2% | Claude Opus 4.8 |
| HLE | 57.9% | 54.7% | Claude Opus 4.8 |
| HLE w/o tools | 49.8% | 40.5% | Claude Opus 4.8 |
| GPQA Diamond (Vals) | 92.4% | 85.6% | Claude Opus 4.8 |
| MMLU-Pro (Vals) | 89.6% | 86.7% | Claude Opus 4.8 |

### Instruction Following

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 75.4 (#61/123)
- GLM-5.2 public-lane score: 89.8 (#22/123)

### Multilingual

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: Coming soon
- GLM-5.2 public-lane score: Coming soon

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| INCLUDE | 87.6% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Claude Opus 4.8 public-lane score: 65.4 (#2/7)
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)

| Benchmark | Claude Opus 4.8 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| USAMO 2026 | 96.7% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 47.241% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 31.250% | Coming soon | Coming soon |
| AIME26 | Coming soon | 99.2% | Coming soon |
| HMMT Nov 2025 | Coming soon | 94.4% | Coming soon |
| HMMT Feb 2026 | Coming soon | 92.5% | Coming soon |
| MMAnswerBench | Coming soon | 91.0% | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.8 or GLM-5.2?

Claude Opus 4.8 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.8 and GLM-5.2?

The widest category gap is in reasoning, where the averages are 55.5 for Claude Opus 4.8 and 74.8 for GLM-5.2.

### How many benchmarks does Claude Opus 4.8 cover on BenchLM?

Claude Opus 4.8 currently has 38 sourced benchmark scores on BenchLM.

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

GLM-5.2 currently has 25 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.8 vs GLM-5.3](/compare/claude-opus-4-8-vs-glm-5-3)
- [GLM-5.2 vs GLM-5.3](/compare/glm-5-2-vs-glm-5-3)
- [Claude Opus 4.8 vs GLM-5.3-Flash](/compare/claude-opus-4-8-vs-glm-5-3-flash)
- [GLM-5.2 vs GLM-5.3-Flash](/compare/glm-5-2-vs-glm-5-3-flash)

## Explore More

- [Claude Opus 4.8 profile](/models/claude-opus-4-8)
- [GLM-5.2 profile](/models/glm-5-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)