# Solar Pro 4 vs Ultramarine 1 Flash

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

- Canonical page: https://benchlm.ai/compare/solar-pro-4-vs-ultramarine-1-flash
- Last updated: October 15, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Solar Pro 4 and Ultramarine 1 Flash 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.
- Ultramarine 1 Flash has the lower published output-token price.
- Solar Pro 4 has the larger published context window at 512K.

## Model Snapshot

| Property | Solar Pro 4 | Ultramarine 1 Flash |
|----------|----------|----------|
| Creator | Upstage | Paper Instruments |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 512K | Not disclosed |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 10 | 5 |
| Pricing (input/output) | $0.30 / $1.20 | $0.15 / $0.50 |

## Category Breakdown

### Agentic

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

| Benchmark | Solar Pro 4 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 57.0% | 83.2% | Ultramarine 1 Flash |
| BrowseComp | 49.2% | Coming soon | Coming soon |
| MCP Atlas | 61.4% | Coming soon | Coming soon |
| APEX-Agents | 18.7% | Coming soon | Coming soon |
| JobBench | Coming soon | 62.9% | Coming soon |
| AutomationBench | Coming soon | 50.2% | Coming soon |

### Coding

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

| Benchmark | Solar Pro 4 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 57.0% | 83.2% | Ultramarine 1 Flash |
| SWE-bench Verified | 70.6% | Coming soon | Coming soon |
| LiveCodeBench | 87.8% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 61.5% | Coming soon |

### Knowledge

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

| Benchmark | Solar Pro 4 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 89.0% | Coming soon | Coming soon |
| MMLU-Pro | 86.3% | Coming soon | Coming soon |

### Mathematics

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

| Benchmark | Solar Pro 4 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.3% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Solar Pro 4 and Ultramarine 1 Flash?

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

- [Solar Pro 4 vs Solar Pro 3](/compare/solar-pro-3-vs-solar-pro-4)
- [Ultramarine 1 Flash vs Solar Pro 3](/compare/solar-pro-3-vs-ultramarine-1-flash)
- [Solar Pro 4 vs Solar Pro 2](/compare/solar-pro-2-vs-solar-pro-4)
- [Ultramarine 1 Flash vs Solar Pro 2](/compare/solar-pro-2-vs-ultramarine-1-flash)

## Explore More

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