# Interfaze Beta vs Mellum2-12B-A2.5B-Thinking

> Side-by-side benchmark comparison for Interfaze Beta and Mellum2-12B-A2.5B-Thinking across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/interfaze-beta-vs-mellum2-12b-a2-5b-thinking
- Last updated: September 4, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Interfaze Beta and Mellum2-12B-A2.5B-Thinking 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.
- Interfaze Beta has the larger published context window at 1M.

## Model Snapshot

| Property | Interfaze Beta | Mellum2-12B-A2.5B-Thinking |
|----------|----------|----------|
| Creator | Interfaze | JetBrains |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 128K |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 9 | 6 |
| Pricing (input/output) | $1.50 / $3.50 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Interfaze Beta public-lane score: Coming soon
- Mellum2-12B-A2.5B-Thinking public-lane score: 48.3 (Estimated · #76/151)

| Benchmark | Interfaze Beta | Mellum2-12B-A2.5B-Thinking | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | Coming soon | 45.6% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Interfaze Beta public-lane score: Coming soon
- Mellum2-12B-A2.5B-Thinking public-lane score: Coming soon

| Benchmark | Interfaze Beta | Mellum2-12B-A2.5B-Thinking | Winner |
|-----------|-----------|-----------|--------|
| Spider 2.0-Lite | 52.9% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 69.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Interfaze Beta public-lane score: 27.5 (Unranked · 5 rankable rows)
- Mellum2-12B-A2.5B-Thinking public-lane score: Coming soon

| Benchmark | Interfaze Beta | Mellum2-12B-A2.5B-Thinking | Winner |
|-----------|-----------|-----------|--------|
| OCRBench V2 | 70.7% | Coming soon | Coming soon |
| olmOCR | 85.7% | Coming soon | Coming soon |
| RefCOCO (avg) | 82.1% | Coming soon | Coming soon |
| MMMU-Pro | 71.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Interfaze Beta public-lane score: 51.1 (Estimated · #85/181)
- Mellum2-12B-A2.5B-Thinking public-lane score: 48.8 (Estimated · #96/181)

| Benchmark | Interfaze Beta | Mellum2-12B-A2.5B-Thinking | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.9% | 57.6% | Interfaze Beta |
| GPQA-D | 89.9% | 57.6% | Interfaze Beta |
| MMMLU | 90.9% | Coming soon | Coming soon |
| MMLU-Redux | Coming soon | 86.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Interfaze Beta public-lane score: Coming soon
- Mellum2-12B-A2.5B-Thinking public-lane score: Coming soon

| Benchmark | Interfaze Beta | Mellum2-12B-A2.5B-Thinking | Winner |
|-----------|-----------|-----------|--------|
| SOB Value Acc | 79.5% | Coming soon | Coming soon |
| IFEval | Coming soon | 76.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Interfaze Beta and Mellum2-12B-A2.5B-Thinking?

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

- [Interfaze Beta vs Mellum2-12B-A2.5B-Instruct](/compare/interfaze-beta-vs-mellum2-12b-a2-5b-instruct)
- [Mellum2-12B-A2.5B-Thinking vs Mellum2-12B-A2.5B-Instruct](/compare/mellum2-12b-a2-5b-instruct-vs-mellum2-12b-a2-5b-thinking)
- [Interfaze Beta vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-interfaze-beta)
- [Mellum2-12B-A2.5B-Thinking vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-mellum2-12b-a2-5b-thinking)

## Explore More

- [Interfaze Beta profile](/models/interfaze-beta)
- [Mellum2-12B-A2.5B-Thinking profile](/models/mellum2-12b-a2-5b-thinking)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)