# Claude Fable 5 vs GLM-5.2

> Side-by-side benchmark comparison for Claude Fable 5 and GLM-5.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

- Shared sourced benchmarks: 10
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Fable 5 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 Fable 5 leads overall 81.42 to 68.19.
- The clearest category separation is in knowledge, where the averages are 83.3 for Claude Fable 5 and 60.7 for GLM-5.2.
- The biggest single benchmark swing is Terminal-Bench 3.0 in Agentic, with scores of 34.0% and 4.6%.
- 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 Fable 5 | GLM-5.2 |
|----------|----------|----------|
| Creator | Anthropic | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M+ | 1M |
| Overall Score | 81.42 | 68.19 |
| Benchmarks Covered | 19 | 25 |
| Pricing (input/output) | $10.00 / $50.00 | $1.40 / $4.40 |

## Category Breakdown

### Agentic

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 74.6 (Supported · #3/153)
- GLM-5.2 public-lane score: 58.5 (Supported · #29/153)

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 34.0% | 4.6% | Claude Fable 5 |
| Terminal-Bench 2.0 | 84.3% | 81% | Claude Fable 5 |
| OSWorld-Verified | 85% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 80.5% | 67.8% | Claude Fable 5 |
| ApprenticeBench | 34% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 76.8% | Coming soon |
| Toolathlon | Coming soon | 48.2% | Coming soon |
| ResearchClawBench | Coming soon | 20.7% | Coming soon |

### Coding

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 77 (Supported · #2/152)
- GLM-5.2 public-lane score: 61 (Supported · #19/152)

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 95% | Coming soon | Coming soon |
| SWE-bench Pro | 80% | 62.1% | Claude Fable 5 |
| FrontierSWE v2 | 47.0% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 53.5% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | 84.3% | 81.0% | Claude Fable 5 |
| cursorBench31 | 70.6% | Coming soon | Coming soon |
| cursorBench32 | 70.5% | 55.0% | Claude Fable 5 |
| VulcanBench v3 | 89.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 89.8% | 69.5% | Claude Fable 5 |
| SWE-bench (Vals) | 95.0% | 82.8% | Claude Fable 5 |
| 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 Fable 5 public-lane score: 62.5 (Unranked · 2 rankable rows)
- GLM-5.2 public-lane score: Coming soon

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Blueprint-Bench 2 | 38.6% | Coming soon | Coming soon |
| OfficeQA Pro | 57.9% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Claude Fable 5 public-lane score: 77.6 (#6/20)
- GLM-5.2 public-lane score: 74.8 (Unranked · 2 rankable rows)

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.9% | Coming soon |

### Knowledge

- Winner: Claude Fable 5
- Claude Fable 5 public-lane score: 83.3 (Supported · #2/183)
- GLM-5.2 public-lane score: 60.7 (Supported · #35/183)

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 93.2% | 85.6% | Claude Fable 5 |
| MMLU-Pro (Vals) | 91.5% | 86.7% | Claude Fable 5 |
| GPQA | Coming soon | 91.2% | Coming soon |
| 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 |

### Instruction Following

- Winner: Coming soon
- Claude Fable 5 public-lane score: 78.5 (#56/123)
- GLM-5.2 public-lane score: 89.8 (#22/123)

### Mathematics

- Winner: Coming soon
- Claude Fable 5 public-lane score: Coming soon
- GLM-5.2 public-lane score: 80.7 (Unranked · 4 rankable rows)

| Benchmark | Claude Fable 5 | GLM-5.2 | Winner |
|-----------|-----------|-----------|--------|
| 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 Fable 5 or GLM-5.2?

Claude Fable 5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Fable 5 and GLM-5.2?

The widest category gap is in knowledge, where the averages are 83.3 for Claude Fable 5 and 60.7 for GLM-5.2.

### How many benchmarks does Claude Fable 5 cover on BenchLM?

Claude Fable 5 currently has 19 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 Fable 5 vs Claude Fable 5.1](/compare/claude-fable-vs-claude-fable-5-1)
- [GLM-5.2 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-glm-5-2)
- [Claude Fable 5 vs GLM-5.3](/compare/claude-fable-vs-glm-5-3)
- [GLM-5.2 vs GLM-5.3](/compare/glm-5-2-vs-glm-5-3)

## Explore More

- [Claude Fable 5 profile](/models/claude-fable)
- [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)