# Claude Mythos Preview vs GLM-5

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

- Canonical page: https://benchlm.ai/compare/claude-mythos-preview-vs-glm-5
- Last updated: September 29, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Mythos Preview and GLM-5 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GLM-5 has the lower published output-token price.
- GLM-5 has the larger published context window at 200K.

## Model Snapshot

| Property | Claude Mythos Preview | GLM-5 |
|----------|----------|----------|
| Creator | Anthropic | Z.AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | null | 200K |
| Independent public score (not head-to-head) | null | 54.26 |
| Benchmarks Covered | 2 | 36 |
| Pricing (input/output) | $25.00 / $125.00 | $1.00 / $3.20 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 37.6 (Estimated · #58/117)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| CyberGym | 83.1% | 43.2% | Claude Mythos Preview |
| ExploitGym | 17.5% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 56.2% | Coming soon |
| Claw-Eval | Coming soon | 57.7% | Coming soon |
| QwenClawBench | Coming soon | 54.1% | Coming soon |
| τ³-bench results | Coming soon | 65.6% | Coming soon |
| DeepPlanning | Coming soon | 14.6% | Coming soon |
| Toolathlon | Coming soon | 38% | Coming soon |
| MCP Atlas | Coming soon | 31.1% | Coming soon |
| MCP-Tasks | Coming soon | 60.8% | Coming soon |
| WideResearch | Coming soon | 69.8% | Coming soon |
| Gert Labs | Coming soon | 50.99% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 39.2 (Estimated · #64/143)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 77.8% | Coming soon |
| SWE-bench Verified* | Coming soon | 72.8% | Coming soon |
| SWE-bench Pro | Coming soon | 55.1% | Coming soon |
| SWE Multilingual | Coming soon | 73.3% | Coming soon |
| SWE-Rebench | Coming soon | 62.8% | Coming soon |
| React Native Evals | Coming soon | 74.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 53.3 (Unranked · 4 rankable rows)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 60.8% | Coming soon |
| AI-Needle | Coming soon | 63.3% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 47.1 (Estimated · #73/169)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 86% | Coming soon |
| GPQA-D | Coming soon | 86.0% | Coming soon |
| SuperGPQA | Coming soon | 66.8% | Coming soon |
| MMLU-Pro | Coming soon | 85.7% | Coming soon |
| MMLU-Pro (Arcee) | Coming soon | 85.8% | Coming soon |
| HLE | Coming soon | 50.4% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 48.7 (#6/12)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 83.1% | Coming soon |
| NOVA-63 | Coming soon | 55.1% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 87.2 (#32/124)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 92.6% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Mythos Preview public-lane score: Coming soon
- GLM-5 public-lane score: 56.5 (#7/7)

| Benchmark | Claude Mythos Preview | GLM-5 | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 95.8% | Coming soon |
| AIME25 (Arcee) | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2025 | Coming soon | 97.5% | Coming soon |
| HMMT Nov 2025 | Coming soon | 96.9% | Coming soon |
| HMMT Feb 2026 | Coming soon | 86.4% | Coming soon |
| MMAnswerBench | Coming soon | 82.5% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 16.434% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 2.100% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Mythos Preview and GLM-5?

Not yet. The models share only 1 sourced benchmark row, 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 Mythos Preview vs Claude Mythos 5](/compare/claude-mythos-5-vs-claude-mythos-preview)
- [GLM-5 vs Claude Mythos 5](/compare/claude-mythos-5-vs-glm-5)
- [Claude Mythos Preview vs Claude Mythos 5.1](/compare/claude-mythos-5-1-vs-claude-mythos-preview)
- [GLM-5 vs Claude Mythos 5.1](/compare/claude-mythos-5-1-vs-glm-5)

## Explore More

- [Claude Mythos Preview profile](/models/claude-mythos-preview)
- [GLM-5 profile](/models/glm-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)