# GLM-5.3-Flash vs Quasar 438B

> Side-by-side benchmark comparison for GLM-5.3-Flash and Quasar 438B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/glm-5-3-flash-vs-quasar-438b
- Last updated: October 17, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GLM-5.3-Flash and Quasar 438B 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-5.3-Flash has the lower published output-token price.

## Model Snapshot

| Property | GLM-5.3-Flash | Quasar 438B |
|----------|----------|----------|
| Creator | Z.AI | Multiverse Computing |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Independent public score (not head-to-head) | 58.52 | 48.46 |
| Benchmarks Covered | 26 | 2 |
| Pricing (input/output) | $0.00 / $0.00 | $0.60 / $1.80 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 57.2 (Supported · #36/128)
- Quasar 438B public-lane score: 40 (Estimated · #67/128)

| Benchmark | GLM-5.3-Flash | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 69.3% | GLM-5.3-Flash |
| Toolathlon-Verified | 78.4% | Coming soon | Coming soon |
| AutomationBench | 48.8% | Coming soon | Coming soon |
| Agents' Last Exam | 26.3% | Coming soon | Coming soon |
| HLE w/ tools | 55.3% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 62.9% | Coming soon | Coming soon |
| Hermes Index | 35.0% | Coming soon | Coming soon |
| Hermes Bench | 68.9% | Coming soon | Coming soon |
| MazeBench | 0% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 48.3 (Supported · #46/150)
- Quasar 438B public-lane score: 41.2 (Estimated · #63/150)

| Benchmark | GLM-5.3-Flash | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 84.3% | 69.3% | GLM-5.3-Flash |
| DeepSWE | 63.4% | Coming soon | Coming soon |
| NL2Repo | 56.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 80.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 92.0% | Coming soon | Coming soon |
| OpenHarmony Bench | 57.3% | Coming soon | Coming soon |
| FrontierSWE v2 | 18.1% | Coming soon | Coming soon |
| Bug Hunt Bench | 17.7 fixes | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 80.8 (#12/28)
- Quasar 438B public-lane score: 78.3 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 84 (#14/54)
- Quasar 438B public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 62.4% | Coming soon | Coming soon |
| CharXiv | 89.4% | Coming soon | Coming soon |
| Chartography (tools) | 78.0% | Coming soon | Coming soon |
| BabyVision | 53.4% | Coming soon | Coming soon |
| MMVU | 80.5% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 60.6 (Supported · #48/184)
- Quasar 438B public-lane score: 46.7 (Estimated · #92/184)

| Benchmark | GLM-5.3-Flash | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 86.4% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.1% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GLM-5.3-Flash public-lane score: 60.4 (Unranked · 2 rankable rows)
- Quasar 438B public-lane score: Coming soon

| Benchmark | GLM-5.3-Flash | Quasar 438B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 55.789% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 17.073% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between GLM-5.3-Flash and Quasar 438B?

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

- [GLM-5.3-Flash vs GLM-5.3](/compare/glm-5-3-vs-glm-5-3-flash)
- [Quasar 438B vs GLM-5.3](/compare/glm-5-3-vs-quasar-438b)
- [GLM-5.3-Flash vs GLM-5.2](/compare/glm-5-2-vs-glm-5-3-flash)
- [Quasar 438B vs GLM-5.2](/compare/glm-5-2-vs-quasar-438b)

## Explore More

- [GLM-5.3-Flash profile](/models/glm-5-3-flash)
- [Quasar 438B profile](/models/quasar-438b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)