# Claude Sonnet 4.5 vs GLM-5.2

> Side-by-side benchmark comparison for Claude Sonnet 4.5 and GLM-5.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 4.5 and GLM-5.2 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.
- GLM-5.2 has the lower published output-token price.
- GLM-5.2 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Sonnet 4.5 | GLM-5.2 |
|----------|----------|----------|
| Creator | Anthropic | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 53.89 | 68.19 |
| Benchmarks Covered | 11 | 25 |
| Pricing (input/output) | $3.00 / $15.00 | $1.40 / $4.40 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 44.2 (Estimated · #92/153)
- GLM-5.2 public-lane score: 58.5 (Supported · #29/153)

| Benchmark | Claude Sonnet 4.5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 50% | 81% | GLM-5.2 |
| OSWorld-Verified | 61.4% | Coming soon | Coming soon |
| VITA-Bench | 17.0% | Coming soon | Coming soon |
| Gert Labs | 48.51% | Coming soon | Coming soon |
| JobBench | 27.7% | Coming soon | Coming soon |
| Terminal-Bench 3.0 | Coming soon | 4.6% | Coming soon |
| MCP Atlas | Coming soon | 76.8% | Coming soon |
| Toolathlon | Coming soon | 48.2% | Coming soon |
| ResearchClawBench | Coming soon | 20.7% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 67.8% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 50.7 (Estimated · #55/152)
- GLM-5.2 public-lane score: 61 (Supported · #19/152)

| Benchmark | Claude Sonnet 4.5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.2% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 62.1% | Coming soon |
| NL2Repo | Coming soon | 48.9% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 81.0% | Coming soon |
| ProgramBench | Coming soon | 63.7% | Coming soon |
| cursorBench32 | Coming soon | 55.0% | Coming soon |
| OpenHarmony Bench | Coming soon | 58.4% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 69.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 82.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 19.1 (Unranked · 1 rankable row)
- GLM-5.2 public-lane score: 74.8 (Unranked · 2 rankable rows)

| Benchmark | Claude Sonnet 4.5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 13.6% | Coming soon | Coming soon |
| CritPt | Coming soon | 20.9% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 51.2 (Estimated · #73/183)
- GLM-5.2 public-lane score: 60.7 (Supported · #35/183)

| Benchmark | Claude Sonnet 4.5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 83.4% | 91.2% | GLM-5.2 |
| GPQA-D | Coming soon | 91.2% | Coming soon |
| HLE | Coming soon | 54.7% | Coming soon |
| HLE w/o tools | Coming soon | 40.5% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 85.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 86.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: Coming soon
- GLM-5.2 public-lane score: 89.8 (#22/123)

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 4.5 public-lane score: 34.8 (Unranked · 2 rankable rows)
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)

| Benchmark | Claude Sonnet 4.5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 87% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 13.495% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 4.167% | 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

### Is there enough evidence to pick between Claude Sonnet 4.5 and GLM-5.2?

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

- [Claude Sonnet 4.5 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-vs-claude-sonnet-4-5-thinking)
- [GLM-5.2 vs Claude Sonnet 4.5 Thinking](/compare/claude-sonnet-4-5-thinking-vs-glm-5-2)
- [Claude Sonnet 4.5 vs GLM-5.3](/compare/claude-sonnet-4-5-vs-glm-5-3)
- [GLM-5.2 vs GLM-5.3](/compare/glm-5-2-vs-glm-5-3)

## Explore More

- [Claude Sonnet 4.5 profile](/models/claude-sonnet-4-5)
- [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)