# GPT-5.4 mini vs Granite 4.2 8B

> Side-by-side benchmark comparison for GPT-5.4 mini and Granite 4.2 8B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-mini-vs-granite-4-2-8b
- 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: GPT-5.4 mini and Granite 4.2 8B 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.
- Granite 4.2 8B has the lower published output-token price.
- GPT-5.4 mini has the larger published context window at 400K.

## Model Snapshot

| Property | GPT-5.4 mini | Granite 4.2 8B |
|----------|----------|----------|
| Creator | OpenAI | IBM |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 128K |
| Independent public score (not head-to-head) | 53.41 | 33.4 |
| Benchmarks Covered | 22 | 14 |
| Pricing (input/output) | $0.75 / $4.50 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 36.1 (Supported · #78/127)
- Granite 4.2 8B public-lane score: 15.7 (Estimated · #113/127)

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 60% | Coming soon | Coming soon |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| MCP Atlas | 57.7% | Coming soon | Coming soon |
| Toolathlon | 42.9% | Coming soon | Coming soon |
| τ²-bench results | 93.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 54.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 20.6% | Coming soon |
| τ³-bench results | Coming soon | 58.1% | Coming soon |
| BFCL v4 | Coming soon | 52.4% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 35.1 (Supported · #77/150)
- Granite 4.2 8B public-lane score: 17.2 (Estimated · #125/150)

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 60.0% | Coming soon | Coming soon |
| Vibe Code Bench | 47.97% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 27.0% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 81.5% | Coming soon | Coming soon |
| SWE-bench (Vals) | 73.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 47.7% | Coming soon |
| SWE-bench Pro | Coming soon | 19.1% | Coming soon |
| SWE Multilingual | Coming soon | 30.8% | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 20.6% | Coming soon |
| LiveCodeBench v6 | Coming soon | 73.2% | Coming soon |
| SciCode | Coming soon | 36.1% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 43.7 (Unranked · 4 rankable rows)
- Granite 4.2 8B public-lane score: 56.8 (Unranked · 2 rankable rows)

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 63.70% | Coming soon | Coming soon |
| ARC-AGI-2 | 18.9% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 73.8 (#28/54)
- Granite 4.2 8B public-lane score: Coming soon

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 76.6% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 78% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 51.5 (Supported · #74/184)
- Granite 4.2 8B public-lane score: 30.6 (Supported · #154/184)

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 88% | 64.1% | GPT-5.4 mini |
| HLE | 41.5% | Coming soon | Coming soon |
| HLE w/o tools | 28.2% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 83.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 84.6% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 74.0% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 89.9 (#27/146)
- Granite 4.2 8B public-lane score: 86.5 (#41/146)

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.3% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.4 mini public-lane score: 55.9 (Unranked · 2 rankable rows)
- Granite 4.2 8B public-lane score: Coming soon

| Benchmark | GPT-5.4 mini | Granite 4.2 8B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 51.228% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 9.756% | Coming soon | Coming soon |
| AIME 2025 | Coming soon | 86.7% | Coming soon |
| HMMT Feb 2025 | Coming soon | 78.3% | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-5.4 mini and Granite 4.2 8B?

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

- [GPT-5.4 mini vs GPT-5.4 Pro](/compare/gpt-5-4-mini-vs-gpt-5-4-pro)
- [Granite 4.2 8B vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-granite-4-2-8b)
- [GPT-5.4 mini vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Granite 4.2 8B vs GPT-5.4](/compare/gpt-5-4-vs-granite-4-2-8b)

## Explore More

- [GPT-5.4 mini profile](/models/gpt-5-4-mini)
- [Granite 4.2 8B profile](/models/granite-4-2-8b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)