# Qwen3.8-27B vs Step 5 Preview

> Side-by-side benchmark comparison for Qwen3.8-27B and Step 5 Preview across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/qwen3-8-27b-vs-step-5-preview
- Last updated: September 21, 2026

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

## Quick Verdict

Pick Step 5 Preview if you want the stronger benchmark profile. Qwen3.8-27B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Step 5 Preview leads overall 72 to 64.17.
- The clearest category separation is in multimodal & grounded, where the averages are 79.8 for Qwen3.8-27B and 61.2 for Step 5 Preview.
- The biggest single benchmark swing is JobBench in Agentic, with scores of 33.4% and 59.0%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Step 5 Preview also has the larger context window at 1M.

## Model Snapshot

| Property | Qwen3.8-27B | Step 5 Preview |
|----------|----------|----------|
| Creator | Alibaba | StepFun |
| Type | Open Weight | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 1M |
| Overall Score | 64.17 | null |
| Benchmarks Covered | 33 | 22 |
| Pricing (input/output) | $0.00 / $0.00 | $1.00 / $2.70 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 64 (Supported · #12/154)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 73.0% | 85.0% | Step 5 Preview |
| CoWorkBench | 70.7% | Coming soon | Coming soon |
| JobBench | 33.4% | 59.0% | Step 5 Preview |
| Agents' Last Exam | 42.9% | 29.5% | Qwen3.8-27B |
| OSWorld-Verified | 84.3% | Coming soon | Coming soon |
| WebArena-Verified | 64.8% | Coming soon | Coming soon |
| AndroidWorld | 81.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 58.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 33.30% | Coming soon |
| CyberGym | Coming soon | 84.7% | Coming soon |
| AutomationBench | Coming soon | 44.0% | Coming soon |
| Toolathlon-Verified | Coming soon | 74.1% | Coming soon |
| MCP Atlas | Coming soon | 85.6% | Coming soon |
| APEX-Agents | Coming soon | 37.8% | Coming soon |
| DRACO | Coming soon | 83.3% | Coming soon |
| BrowseComp | Coming soon | 88.7% | Coming soon |

### Coding

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 54.4 (Supported · #42/156)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 73.0% | 85.0% | Step 5 Preview |
| SWE-bench Pro | 61.7% | Coming soon | Coming soon |
| NL2Repo | 42.3% | Coming soon | Coming soon |
| DeepSWE | 42.2% | 67.7% | Step 5 Preview |
| LiveCodeBench v6 | 90.3% | Coming soon | Coming soon |
| VulcanBench v3 | 82.6% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 86.0% | Coming soon | Coming soon |
| SciCode | Coming soon | 58.9% | Coming soon |
| ProgramBench | Coming soon | 80.5% | Coming soon |
| sweMarathon | Coming soon | 72.7% | Coming soon |
| MLS-Bench Lite | Coming soon | 40.5% | Coming soon |

### Reasoning

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 77.4 (#7/19)
- Step 5 Preview public-lane score: 78.5 (Unranked · 2 rankable rows)

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.9% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 79.8 (#11/49)
- Step 5 Preview public-lane score: 61.2 (#28/49)

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| MathVision | 90.0% | Coming soon | Coming soon |
| MathVision w/ Python | 94.6% | Coming soon | Coming soon |
| BabyVision | 65.7% | Coming soon | Coming soon |
| BabyVision w/ Python | 85.6% | Coming soon | Coming soon |
| Vision2Web | 62.9% | Coming soon | Coming soon |
| CharXiv w/o tools | 83.7% | Coming soon | Coming soon |
| CharXiv | 90.2% | Coming soon | Coming soon |
| OmniDocBench 1.5 | 91.1% | Coming soon | Coming soon |
| RealWorldQA | 85.9% | Coming soon | Coming soon |
| ERQA | 65.5% | Coming soon | Coming soon |
| OfficeQA Pro | Coming soon | 60.3% | Coming soon |
| MMMU-Pro | Coming soon | 76% | Coming soon |

### Knowledge

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 54.1 (Supported · #61/186)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.2% | Coming soon | Coming soon |
| GPQA-D | 89.2% | 93.5% | Step 5 Preview |
| HLE | 30.8% | 46.5% | Step 5 Preview |
| HLE w/o tools | 30.8% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.9% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 84.3% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- Qwen3.8-27B public-lane score: 83.2 (#45/124)
- Step 5 Preview public-lane score: Coming soon

| Benchmark | Qwen3.8-27B | Step 5 Preview | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.5% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Qwen3.8-27B or Step 5 Preview?

Step 5 Preview is ahead overall on BenchLM right now.

### Where is the biggest gap between Qwen3.8-27B and Step 5 Preview?

The widest category gap is in multimodal & grounded, where the averages are 79.8 for Qwen3.8-27B and 61.2 for Step 5 Preview.

### How many benchmarks does Qwen3.8-27B cover on BenchLM?

Qwen3.8-27B currently has 33 sourced benchmark scores on BenchLM.

### How many benchmarks does Step 5 Preview cover on BenchLM?

Step 5 Preview currently has 22 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Qwen3.8-27B vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-qwen3-8-27b)
- [Step 5 Preview vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-step-5-preview)
- [Qwen3.8-27B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-8-27b)
- [Step 5 Preview vs GPT-6 Astra](/compare/gpt-6-astra-vs-step-5-preview)

## Explore More

- [Qwen3.8-27B profile](/models/qwen3-8-27b)
- [Step 5 Preview profile](/models/step-5-preview)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)