Model comparison
Grok 4.1 Fast (Reasoning) vs Hy3 Preview
Head-to-head evidence from 9 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Grok 4.1 Fast (Reasoning) #48 (Supported); Hy3 Preview unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok 4.1 Fast (Reasoning) and Hy3 Preview share 9 comparable benchmark results. 0 of 8 categories are comparable. 4 results are unique to Grok 4.1 Fast (Reasoning); 13 to Hy3 Preview.
Updated July 18, 2026- Shared results
- 9
- Grok 4.1 Fast (Reasoning) only
- 4
- Hy3 Preview only
- 13
- Comparable categories
- 0 / 8
Benchmark data for Grok 4.1 Fast (Reasoning) and Hy3 Preview is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 9 shared benchmark results across 3 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Grok 4.1 Fast (Reasoning) has the larger context window at 2M, compared with 256K for Hy3 Preview.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Grok 4.1 Fast (Reasoning) | Δ | Hy3 Preview |
|---|---|---|---|
| Agentic | Grok 4.1 Fast (Reasoning)Not measured | MarginNo overlap | Hy3 Preview54.4 |
| Coding | Grok 4.1 Fast (Reasoning)Not measured | MarginNo overlap | Hy3 Preview57.8 |
| Knowledge | Grok 4.1 Fast (Reasoning)Not measured | MarginNo overlap | Hy3 Preview33.8 |
| Inst. Following | Grok 4.1 Fast (Reasoning)Not measured | MarginNo overlap | Hy3 Preview63.1 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok 4.1 Fast (Reasoning) | Hy3 Preview | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok 4.1 Fast (Reasoning)Not available | Hy3 Preview$0 input / $0 output | A complete price comparison is not available. |
| Generation speedtokens per second | Grok 4.1 Fast (Reasoning)Not available | Hy3 PreviewNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok 4.1 Fast (Reasoning)Not available | Hy3 PreviewNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok 4.1 Fast (Reasoning)2M | Hy3 Preview256K | Grok 4.1 Fast (Reasoning) lists the larger context window. |
Benchmark Deep Dive
Agentic6 benchmarks
Coding6 benchmarks
| Benchmark | Grok 4.1 Fast (Reasoning) | Hy3 Preview | Result |
|---|---|---|---|
| Vibe Code BenchSource | 1.20% | — | Not comparable |
| AA-SciCodeSource | 44.2% | 47.6% | Hy3 Preview leads |
| SWE-bench VerifiedSource | — | 74.4% | Not comparable |
| Terminal-Bench 2.0Source | — | 54.4% | Not comparable |
| SciCodeSource | — | 41.2% | Not comparable |
| AA Coding IndexSource | — | 58.8% | Not comparable |
Reasoning2 benchmarks
Knowledge9 benchmarks
| Benchmark | Grok 4.1 Fast (Reasoning) | Hy3 Preview | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 30.6% | 41.2% | Hy3 Preview leads |
| AA-GPQA DiamondSource | 85.3% | 89.7% | Hy3 Preview leads |
| AA-HLESource | 17.6% | 31.6% | Hy3 Preview leads |
| AA-Omniscience IndexSource | -28.7% | -18.5% | Hy3 Preview leads |
| AA-Omniscience AccuracySource | 25.3% | 31.5% | Hy3 Preview leads |
| AA-Omniscience Hallucination RateSource | 72.4% | 73.0% | Grok 4.1 Fast (Reasoning) leads |
| GPQASource | — | 87.2% | Not comparable |
| GPQA-DSource | — | 87.2% | Not comparable |
| HLESource | — | 25.5% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Grok 4.1 Fast (Reasoning) | Hy3 Preview | Result |
|---|---|---|---|
| AA-MMMU-ProSource | 63.3% | — | Not comparable |
Frequently Asked Questions (3)
Can I compare Grok 4.1 Fast (Reasoning) and Hy3 Preview on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Grok 4.1 Fast (Reasoning) and Hy3 Preview today?
Hy3 Preview: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
Related Comparisons
Explore More
The AI models change fast. We track them for you.
A weekly brief for engineers and researchers covering new models, ranking shifts, and pricing changes.
Free. No spam. Unsubscribe anytime.