Model comparison
Grok 4.5 vs Hy3 Preview
Head-to-head evidence from 15 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: Grok 4.5 supported; Hy3 Preview not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok 4.5 and Hy3 Preview share 15 comparable benchmark results. 2 of 8 categories are comparable. 12 results are unique to Grok 4.5; 7 to Hy3 Preview.
Updated July 16, 2026- Shared results
- 15
- Grok 4.5 only
- 12
- Hy3 Preview only
- 7
- Comparable categories
- 2 / 8
Pick Grok 4.5 if you want the stronger benchmark profile. Hy3 Preview only becomes the better choice if you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 15 shared benchmark results across 4 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Grok 4.5 is clearly ahead on the provisional aggregate, 80 to 53. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok 4.5's sharpest advantage is in agentic, where it averages 83.3 against 54.4. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 83.3% to 54.4%.
Grok 4.5 is also the more expensive model on tokens at $2.00 input / $6.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Hy3 Preview. That is roughly Infinityx on output cost alone. Grok 4.5 gives you the larger context window at 500K, 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 4.5 | Δ | Hy3 Preview |
|---|---|---|---|
| Agentic | Grok 4.583.3 | Margin← 28.9 | Hy3 Preview54.4 |
| Coding | Grok 4.564.7 | Margin← 6.9 | Hy3 Preview57.8 |
| Knowledge | Grok 4.5Not measured | MarginNo overlap | Hy3 Preview33.8 |
| Inst. Following | Grok 4.5Not measured | MarginNo overlap | Hy3 Preview63.1 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 83.3%B 54.4%Winner: Grok 4.5Δ 28.9Terminal-Bench 2.0: Grok 4.5 scored 83.3%; Hy3 Preview scored 54.4%. Grok 4.5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok 4.5 | Hy3 Preview | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok 4.5$2 input / $6 output | Hy3 Preview$0 input / $0 output | Hy3 Preview has the lower combined listed price. |
| Generation speedtokens per second | Grok 4.5Not available | Hy3 PreviewNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok 4.5Not available | Hy3 PreviewNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok 4.5500K | Hy3 Preview256K | Grok 4.5 lists the larger context window. |
Benchmark Deep Dive
AgenticGrok 4.5 wins11 benchmarks
| Benchmark | Grok 4.5 | Hy3 Preview | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 83.3% | 54.4% | Grok 4.5 leads |
| deepSweSource | 53% | — | Not comparable |
| AA Agentic IndexSource | 45.7% | 30.7% | Grok 4.5 leads |
| GDPval-AASource | 51.9% | 35.7% | Grok 4.5 leads |
| GDPval-AASource | 1539 | 1214 | Grok 4.5 leads |
| AA BriefcaseSource | 1324 | — | Not comparable |
| AA AutomationBenchSource | 51.4% | — | Not comparable |
| AA EnterpriseOps-GymSource | 40.8% | — | Not comparable |
| AA Harvey LABSource | 13.3% | — | Not comparable |
| AA Tau3 BankingSource | 32.6% | — | Not comparable |
| Gert LabsSource | — | 36.91% | Not comparable |
CodingGrok 4.5 wins9 benchmarks
| Benchmark | Grok 4.5 | Hy3 Preview | Result |
|---|---|---|---|
| SWE-bench ProSource | 64.7% | — | Not comparable |
| SWE MultilingualSource | 78% | — | Not comparable |
| Terminal-Bench 2.0Source | 83.3% | 54.4% | Grok 4.5 leads |
| cursorBench32Source | 66.7% | — | Not comparable |
| AA Coding IndexSource | 72.5% | 58.8% | Grok 4.5 leads |
| AA-SciCodeSource | 54.1% | 47.6% | Grok 4.5 leads |
| AA Terminal-Bench 2.1Source | 81.6% | — | Not comparable |
| SWE-bench VerifiedSource | — | 74.4% | Not comparable |
| SciCodeSource | — | 41.2% | Not comparable |
Reasoning2 benchmarks
Knowledge9 benchmarks
| Benchmark | Grok 4.5 | Hy3 Preview | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 53.8% | 41.2% | Grok 4.5 leads |
| AA-GPQA DiamondSource | 93.1% | 89.7% | Grok 4.5 leads |
| AA-HLESource | 40.3% | 31.6% | Grok 4.5 leads |
| AA-Omniscience IndexSource | 26.4% | -18.5% | Grok 4.5 leads |
| AA-Omniscience AccuracySource | 52.1% | 31.5% | Grok 4.5 leads |
| AA-Omniscience Hallucination RateSource | 53.5% | 73.0% | Grok 4.5 leads |
| GPQASource | — | 87.2% | Not comparable |
| GPQA-DSource | — | 87.2% | Not comparable |
| HLESource | — | 25.5% | Not comparable |
Multimodal2 benchmarks
Inst. Following1 benchmarks
| Benchmark | Grok 4.5 | Hy3 Preview | Result |
|---|---|---|---|
| IFBenchSource | — | 63.1% | Not comparable |
Frequently Asked Questions (3)
Which is better, Grok 4.5 or Hy3 Preview?
Grok 4.5 is ahead on BenchLM's provisional leaderboard, 80 to 53. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 83.3% and 54.4%.
Which is better for coding, Grok 4.5 or Hy3 Preview?
Grok 4.5 has the edge for coding in this comparison, averaging 64.7 versus 57.8. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Grok 4.5 or Hy3 Preview?
Grok 4.5 has the edge for agentic tasks in this comparison, averaging 83.3 versus 54.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.
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