# Granite 4.2 8B vs Seed 2.1 Pro

> Side-by-side benchmark comparison for Granite 4.2 8B and Seed 2.1 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/granite-4-2-8b-vs-seed-2-1-pro
- Last updated: September 10, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Granite 4.2 8B and Seed 2.1 Pro 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.
- Seed 2.1 Pro has the lower published output-token price.
- Seed 2.1 Pro has the larger published context window at 256K.

## Model Snapshot

| Property | Granite 4.2 8B | Seed 2.1 Pro |
|----------|----------|----------|
| Creator | IBM | ByteDance |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | 38.51 | null |
| Benchmarks Covered | 14 | 11 |
| Pricing (input/output) | $0.00 / $0.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 31.8 (Estimated · #138/152)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 20.6% | 71.0% | Seed 2.1 Pro |
| τ³-bench results | 58.1% | Coming soon | Coming soon |
| BFCL v4 | 52.4% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 37.2 (Estimated · #125/151)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 47.7% | Coming soon | Coming soon |
| SWE-bench Pro | 19.1% | Coming soon | Coming soon |
| SWE Multilingual | 30.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 20.6% | 71.0% | Seed 2.1 Pro |
| LiveCodeBench v6 | 73.2% | Coming soon | Coming soon |
| SciCode | 36.1% | Coming soon | Coming soon |
| NL2Repo | Coming soon | 47% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| MathVision | Coming soon | 92.6% | Coming soon |
| MMMU-Pro | Coming soon | 81.6% | Coming soon |
| ZeroBench | Coming soon | 18.0% | Coming soon |
| BabyVision | Coming soon | 73.7% | Coming soon |
| CharXiv | Coming soon | 85.4% | Coming soon |
| ERQA | Coming soon | 72.0% | Coming soon |
| Video-MME | Coming soon | 89.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 51.9 (Unranked · 2 rankable rows)
- Seed 2.1 Pro public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 34.7 (Supported · #161/183)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 64.1% | Coming soon | Coming soon |
| MMLU-Pro | 74.0% | Coming soon | Coming soon |
| SuperGPQA | Coming soon | 70.8% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 84.4 (#46/123)
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.3% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: Coming soon
- Seed 2.1 Pro public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Seed 2.1 Pro | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 86.7% | Coming soon | Coming soon |
| HMMT Feb 2025 | 78.3% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Granite 4.2 8B and Seed 2.1 Pro?

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

- [Granite 4.2 8B vs Granite 4.2 30B](/compare/granite-4-2-30b-vs-granite-4-2-8b)
- [Seed 2.1 Pro vs Granite 4.2 30B](/compare/granite-4-2-30b-vs-seed-2-1-pro)
- [Granite 4.2 8B vs Granite 4.2 3B](/compare/granite-4-2-3b-vs-granite-4-2-8b)
- [Seed 2.1 Pro vs Granite 4.2 3B](/compare/granite-4-2-3b-vs-seed-2-1-pro)

## Explore More

- [Granite 4.2 8B profile](/models/granite-4-2-8b)
- [Seed 2.1 Pro profile](/models/seed-2-1-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)