# DeepSeek V4.1 Flash vs Solar Pro 4

> Side-by-side benchmark comparison for DeepSeek V4.1 Flash and Solar Pro 4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/deepseek-v4-1-flash-vs-solar-pro-4
- Last updated: September 10, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: DeepSeek V4.1 Flash and Solar Pro 4 share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- DeepSeek V4.1 Flash has the larger published context window at 1M.

## Model Snapshot

| Property | DeepSeek V4.1 Flash | Solar Pro 4 |
|----------|----------|----------|
| Creator | DeepSeek | Upstage |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 512K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 21 | 10 |
| Pricing (input/output) | $0.30 / $1.20 | $0.30 / $1.20 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: Coming soon
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | DeepSeek V4.1 Flash | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 90.6% | 57.0% | DeepSeek V4.1 Flash |
| terminalBench3 | 30% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 31.20% | Coming soon | Coming soon |
| CyberGym | 88.1% | Coming soon | Coming soon |
| ExploitGym | 15.3% | Coming soon | Coming soon |
| HLE w/ tools | 63.9% | Coming soon | Coming soon |
| AutomationBench | 54.8% | Coming soon | Coming soon |
| Agents' Last Exam | 31.8% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 49.2% | Coming soon |
| MCP Atlas | Coming soon | 61.4% | Coming soon |
| APEX-Agents | Coming soon | 18.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: Coming soon
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | DeepSeek V4.1 Flash | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Codeforces | 3471.0 | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 90.6% | 57.0% | DeepSeek V4.1 Flash |
| terminalBench3 | 30% | Coming soon | Coming soon |
| DeepSWE | 74.2% | Coming soon | Coming soon |
| ProgramBench | 20.3% | Coming soon | Coming soon |
| NL2Repo | 65.4% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 70.6% | Coming soon |
| LiveCodeBench | Coming soon | 87.8% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: 73.4 (Unranked · 1 rankable row)
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | DeepSeek V4.1 Flash | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Chartography (tools) | 78.9% | Coming soon | Coming soon |
| BabyVision w/ Python | 89.6% | Coming soon | Coming soon |
| ZeroBench w/ Python | 49.0% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: 78.5 (Unranked · 2 rankable rows)
- Solar Pro 4 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: Coming soon
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | DeepSeek V4.1 Flash | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 90.9% | Coming soon | Coming soon |
| GPQA-D | 90.9% | 89.0% | DeepSeek V4.1 Flash |
| HLE | 36.8% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 86.3% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- DeepSeek V4.1 Flash public-lane score: Coming soon
- Solar Pro 4 public-lane score: Coming soon

| Benchmark | DeepSeek V4.1 Flash | Solar Pro 4 | Winner |
|-----------|-----------|-----------|--------|
| Apex | 65.6% | Coming soon | Coming soon |
| AIME26 | Coming soon | 95.3% | Coming soon |

## FAQ

### Is there enough evidence to pick between DeepSeek V4.1 Flash and Solar Pro 4?

Not yet. The models share only 3 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

- [DeepSeek V4.1 Flash vs Solar Pro 2](/compare/deepseek-v4-1-flash-vs-solar-pro-2)
- [Solar Pro 4 vs Solar Pro 2](/compare/solar-pro-2-vs-solar-pro-4)
- [DeepSeek V4.1 Flash vs Solar Pro 3](/compare/deepseek-v4-1-flash-vs-solar-pro-3)
- [Solar Pro 4 vs Solar Pro 3](/compare/solar-pro-3-vs-solar-pro-4)

## Explore More

- [DeepSeek V4.1 Flash profile](/models/deepseek-v4-1-flash)
- [Solar Pro 4 profile](/models/solar-pro-4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)