Model comparison
Grok 4 Fast vs Nova Premier 1.0
Grok 4 Fast is the stronger model overall, scoring 39.0 to 37.7 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Grok 4 Fast scores higher in 4 categories and Nova Premier 1.0 in 1 category; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4 Fast leads 60.2 to 51.0.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 66.1% for Grok 4 Fast and 44.8% for Nova Premier 1.0.
Side by side
| Grok 4 Fast | Nova Premier 1.0 | |
|---|---|---|
| Provider | xAI | Amazon |
| Noometry Index | 39.0 | 37.7 |
| Released | 2025-09-19 | 2025-04-30 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 10K |
| Input $ / M tokens | — | $2.50 |
| Output $ / M tokens | — | $12.50 |
| Results tracked | 30 | 6 |
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Category by category
Coding Not comparable
Grok 4 Fast: 32.3 (#264), Nova Premier 1.0: —
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| LMArena WebDev | 1160 | — |
| WeirdML | 42.9% | — |
| LMArena Coding | 1429 | — |
Agentic & Tool Use Not comparable
Grok 4 Fast: 29.3 (#80), Nova Premier 1.0: —
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |
Reasoning Too close to call
Grok 4 Fast: 22.5 (#179), Nova Premier 1.0: 22.3 (#182)
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| Kagi LLM Benchmark | 66.1% | 44.8% |
| ARC-AGI-2 | 5.3% | — |
| ARC-AGI-1 | 48.5% | — |
| LMArena Hard Prompts | 1413 | — |
| DTBench | 82.7% | — |
| Epoch Capabilities Index | 144.21 | — |
| ForecastBench | 60.5 | — |
Math Grok 4 Fast leads
Grok 4 Fast: 36.1 (#126), Nova Premier 1.0: 31.5 (#194)
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| Omni-MATH | — | 35% |
| LMArena Math | 1419 | — |
Knowledge Nova Premier 1.0 leads
Grok 4 Fast: 31.5 (#211), Nova Premier 1.0: 35.4 (#176)
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| MMLU-Pro | — | 72.6% |
| Vectara Hallucination Rate | 19.7% | — |
| GPQA (HELM) | — | 51.8% |
| LMArena Expert | 1411 | — |
Multilingual Not comparable
Grok 4 Fast: 51.5 (#106), Nova Premier 1.0: —
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| LMArena Non-English | 1397 | — |
| LMArena Chinese | 1458 | — |
| LMArena French | 1433 | — |
| LMArena German | 1383 | — |
| LMArena Japanese | 1358 | — |
| LMArena Korean | 1359 | — |
| LMArena Russian | 1387 | — |
| LMArena Spanish | 1414 | — |
Instruction Following Grok 4 Fast leads
Grok 4 Fast: 73.4 (#116), Nova Premier 1.0: 66.9 (#201)
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| IFEval | — | 80.3% |
| LMArena Instruction Following | 1388 | — |
Long Context Not comparable
Grok 4 Fast: 63.2 (#3), Nova Premier 1.0: —
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| Fiction.LiveBench | 94.4% | — |
| LMArena Longer Query | 1415 | — |
Writing & Preference Grok 4 Fast leads
Grok 4 Fast: 60.2 (#96), Nova Premier 1.0: 51.0 (#174)
| Benchmark | Grok 4 Fast | Nova Premier 1.0 |
|---|---|---|
| LMArena Text | 1407 | — |
| LMArena Creative Writing | 1388 | — |
| WildBench | — | 78.8% |
| LMArena Multi-Turn | 1414 | — |
Frequently asked questions
Is Grok 4 Fast better than Nova Premier 1.0?
Grok 4 Fast is the stronger model overall, scoring 39.0 to 37.7 on the Noometry Index.
How many benchmarks do Grok 4 Fast and Nova Premier 1.0 share?
1 benchmark has published results for both models. Grok 4 Fast has 30 scored results on Noometry and Nova Premier 1.0 has 6.