# Quasar 438B vs Qwen3.8-27B

> Side-by-side benchmark comparison for Quasar 438B and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/quasar-438b-vs-qwen3-8-27b
- 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: Quasar 438B and Qwen3.8-27B 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.
- Qwen3.8-27B has the lower published output-token price.
- Quasar 438B has the larger published context window at 1M.

## Model Snapshot

| Property | Quasar 438B | Qwen3.8-27B |
|----------|----------|----------|
| Creator | Multiverse Computing | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Independent public score (not head-to-head) | 48.46 | 59.61 |
| Benchmarks Covered | 2 | 34 |
| Pricing (input/output) | $0.60 / $1.80 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 40 (Estimated · #67/128)
- Qwen3.8-27B public-lane score: 63.3 (Supported · #20/128)

| Benchmark | Quasar 438B | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 69.3% | 73.0% | Qwen3.8-27B |
| CoWorkBench | Coming soon | 70.7% | Coming soon |
| JobBench | Coming soon | 33.4% | Coming soon |
| Agents' Last Exam | Coming soon | 42.9% | Coming soon |
| OSWorld-Verified | Coming soon | 84.3% | Coming soon |
| WebArena-Verified | Coming soon | 64.8% | Coming soon |
| AndroidWorld | Coming soon | 81.9% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 58.4% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 41.2 (Estimated · #63/150)
- Qwen3.8-27B public-lane score: 46.6 (Supported · #51/150)

| Benchmark | Quasar 438B | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 69.3% | 73.0% | Qwen3.8-27B |
| SWE-bench Pro | Coming soon | 61.7% | Coming soon |
| NL2Repo | Coming soon | 42.3% | Coming soon |
| DeepSWE | Coming soon | 42.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.3% | Coming soon |
| VulcanBench v3 | Coming soon | 82.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 84.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 86.0% | Coming soon |
| Bug Hunt Bench | Coming soon | 15.0 fixes | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 78.3 (Unranked · 2 rankable rows)
- Qwen3.8-27B public-lane score: 82.2 (#9/28)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 84.4 (#13/54)

| Benchmark | Quasar 438B | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| MathVision | Coming soon | 90.0% | Coming soon |
| MathVision w/ Python | Coming soon | 94.6% | Coming soon |
| BabyVision | Coming soon | 65.7% | Coming soon |
| BabyVision w/ Python | Coming soon | 85.6% | Coming soon |
| Vision2Web | Coming soon | 62.9% | Coming soon |
| CharXiv w/o tools | Coming soon | 83.7% | Coming soon |
| CharXiv | Coming soon | 90.2% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 91.1% | Coming soon |
| RealWorldQA | Coming soon | 85.9% | Coming soon |
| ERQA | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: 46.7 (Estimated · #92/184)
- Qwen3.8-27B public-lane score: 51.3 (Supported · #76/184)

| Benchmark | Quasar 438B | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 89.2% | Coming soon |
| GPQA-D | Coming soon | 89.2% | Coming soon |
| HLE | Coming soon | 30.8% | Coming soon |
| HLE w/o tools | Coming soon | 30.8% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 84.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Quasar 438B public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 86.9 (#41/148)

| Benchmark | Quasar 438B | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Quasar 438B and Qwen3.8-27B?

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

- [Quasar 438B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-quasar-438b)
- [Qwen3.8-27B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-8-27b)
- [Quasar 438B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-quasar-438b)
- [Qwen3.8-27B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-qwen3-8-27b)

## Explore More

- [Quasar 438B profile](/models/quasar-438b)
- [Qwen3.8-27B profile](/models/qwen3-8-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)