# Claude Haiku 4.5 vs Ultramarine 1 Flash

> Side-by-side benchmark comparison for Claude Haiku 4.5 and Ultramarine 1 Flash across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-vs-ultramarine-1-flash
- Last updated: October 15, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 4.5 and Ultramarine 1 Flash share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is 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.
- Claude Haiku 4.5 has the larger published context window at 200K.

## Model Snapshot

| Property | Claude Haiku 4.5 | Ultramarine 1 Flash |
|----------|----------|----------|
| Creator | Anthropic | Paper Instruments |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | Not disclosed |
| Independent public score (not head-to-head) | 41.15 | null |
| Benchmarks Covered | 8 | 5 |
| Pricing (input/output) | $1.00 / $5.00 | $0.15 / $0.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 21.5 (Supported · #105/126)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 16.0% | 62.9% | Ultramarine 1 Flash |
| Terminal-Bench 2.1 (Vals) | 43.8% | Coming soon | Coming soon |
| AutomationBench | Coming soon | 50.2% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 83.2% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 16.8 (Supported · #125/149)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 73.3% | Coming soon | Coming soon |
| VulcanBench v3 | 76.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 41.2% | Coming soon | Coming soon |
| SWE-bench (Vals) | 66.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 83.2% | Coming soon |
| DeepSWE | Coming soon | 61.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 public-lane score: 33.3 (Estimated · #139/182)
- Ultramarine 1 Flash public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 | Ultramarine 1 Flash | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 72.2% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 78.7% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Haiku 4.5 and Ultramarine 1 Flash?

Not yet. The models share only 1 sourced benchmark row, 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

- [Claude Haiku 4.5 vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Ultramarine 1 Flash vs Claude Haiku 4.5 Thinking](/compare/claude-haiku-4-5-thinking-vs-ultramarine-1-flash)
- [Claude Haiku 4.5 vs Claude Opus 5.5](/compare/claude-haiku-4-5-vs-claude-opus-5-5)
- [Ultramarine 1 Flash vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-ultramarine-1-flash)

## Explore More

- [Claude Haiku 4.5 profile](/models/claude-haiku-4-5)
- [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)