# Grok 4.1 Fast (Reasoning) vs LFM2.5-230M

> Side-by-side benchmark comparison for Grok 4.1 Fast (Reasoning) and LFM2.5-230M across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-1-fast-reasoning-vs-lfm2-5-230m
- Last updated: September 27, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Grok 4.1 Fast (Reasoning) and LFM2.5-230M.

## Summary

- Grok 4.1 Fast (Reasoning) and LFM2.5-230M 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 4.1 Fast (Reasoning) | LFM2.5-230M |
|----------|----------|----------|
| Creator | xAI | LiquidAI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 2M | 32K |
| Independent public score (not head-to-head) | 45.68 | null |
| Benchmarks Covered | 1 | 6 |
| Pricing (input/output) | N/A | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: Coming soon
- LFM2.5-230M public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast (Reasoning) | LFM2.5-230M | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | Coming soon | 21.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 27.6 (Estimated · #92/135)
- LFM2.5-230M public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast (Reasoning) | LFM2.5-230M | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 1.20% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 72.9 (Unranked · 2 rankable rows)
- LFM2.5-230M public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 53.3 (Unranked · 1 rankable row)
- LFM2.5-230M public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 41.4 (Estimated · #87/158)
- LFM2.5-230M public-lane score: Coming soon

| Benchmark | Grok 4.1 Fast (Reasoning) | LFM2.5-230M | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 25.4% | Coming soon |
| GPQA-D | Coming soon | 25.4% | Coming soon |
| MMLU-Pro | Coming soon | 20.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Grok 4.1 Fast (Reasoning) public-lane score: 61.6 (#73/124)
- LFM2.5-230M public-lane score: 10.4 (#123/124)

| Benchmark | Grok 4.1 Fast (Reasoning) | LFM2.5-230M | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 71.7% | Coming soon |
| IFBench | Coming soon | 38.4% | Coming soon |

## FAQ

### Can I compare Grok 4.1 Fast (Reasoning) and LFM2.5-230M 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 4.1 Fast (Reasoning) vs Grok 4.1 Fast](/compare/grok-4-1-fast-vs-grok-4-1-fast-reasoning)
- [LFM2.5-230M vs Grok 4.1 Fast](/compare/grok-4-1-fast-vs-lfm2-5-230m)
- [Grok 4.1 Fast (Reasoning) vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-1-fast-reasoning)
- [LFM2.5-230M vs GPT-6 Astra](/compare/gpt-6-astra-vs-lfm2-5-230m)

## Explore More

- [Grok 4.1 Fast (Reasoning) profile](/models/grok-4-1-fast-reasoning)
- [LFM2.5-230M profile](/models/lfm2-5-230m)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)