# Grok 4 Fast (Reasoning) vs Winnow-12B Q8

> Side-by-side benchmark comparison for Grok 4 Fast (Reasoning) and Winnow-12B Q8 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-fast-reasoning-vs-winnow-12b
- Last updated: October 1, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Grok 4 Fast (Reasoning) and Winnow-12B Q8.

## Summary

- Grok 4 Fast (Reasoning) and Winnow-12B Q8 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Grok 4 Fast (Reasoning) | Winnow-12B Q8 |
|----------|----------|----------|
| Creator | xAI | Eldan Ring |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 2M | null |
| Independent public score (not head-to-head) | 43.91 | null |
| Benchmarks Covered | 1 | 2 |
| Pricing (input/output) | N/A | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Grok 4 Fast (Reasoning) public-lane score: 22.8 (Estimated · #115/144)
- Winnow-12B Q8 public-lane score: Coming soon

| Benchmark | Grok 4 Fast (Reasoning) | Winnow-12B Q8 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 0.00% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Grok 4 Fast (Reasoning) public-lane score: 73 (Unranked · 2 rankable rows)
- Winnow-12B Q8 public-lane score: Coming soon

| Benchmark | Grok 4 Fast (Reasoning) | Winnow-12B Q8 | Winner |
|-----------|-----------|-----------|--------|
| JevBench 1.4 | Coming soon | 55.58 | Coming soon |
| JevBench 1.5 | Coming soon | 73.23 | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 4 Fast (Reasoning) public-lane score: 52.2 (Unranked · 1 rankable row)
- Winnow-12B Q8 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Grok 4 Fast (Reasoning) public-lane score: 39.6 (Estimated · #101/170)
- Winnow-12B Q8 public-lane score: Coming soon

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 4 Fast (Reasoning) public-lane score: 58.7 (#74/124)
- Winnow-12B Q8 public-lane score: Coming soon

## FAQ

### Can I compare Grok 4 Fast (Reasoning) and Winnow-12B Q8 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Grok 4 Fast (Reasoning) vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-fast-reasoning)
- [Winnow-12B Q8 vs GPT-6 Astra](/compare/gpt-6-astra-vs-winnow-12b)
- [Grok 4 Fast (Reasoning) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-fast-reasoning)
- [Winnow-12B Q8 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-winnow-12b)

## Explore More

- [Grok 4 Fast (Reasoning) profile](/models/grok-4-fast-reasoning)
- [Winnow-12B Q8 profile](/models/winnow-12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)