Model comparison
Amazon Nova Lite vs Grok 4.1 Fast
Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 31.9 on the Noometry Index. Amazon Nova Lite costs 2.6× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.
Last verified . 20 shared benchmarks.
Summary
- They share 20 benchmarks with published results for both. Amazon Nova Lite scores higher in 0 categories and Grok 4.1 Fast in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 19.3.
- The biggest single-benchmark swing is Vectara Hallucination Rate: 6.1% for Amazon Nova Lite and 17.8% for Grok 4.1 Fast.
- Amazon Nova Lite is cheaper at $0.06 / $0.24 per million input/output tokens, against $0.20 / $0.50 for Grok 4.1 Fast.
- Amazon Nova Lite accepts more context: 300K tokens versus 128K.
Side by side
| Amazon Nova Lite | Grok 4.1 Fast | |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 31.9 | 41.4 |
| Released | 2024-12-03 | 2025-06-27 |
| Weights | Proprietary | Proprietary |
| Context window | 300K | 128K |
| Max output | 10K | 30K |
| Input $ / M tokens | $0.06 | $0.20 |
| Output $ / M tokens | $0.24 | $0.50 |
| Results tracked | 34 | 32 |
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Category by category
Coding Grok 4.1 Fast leads
Amazon Nova Lite: 32.5 (#270), Grok 4.1 Fast: 34.1 (#245)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1239 | 1411 |
| ALE-Bench | 236.25 | 394.93 |
| LMArena WebDev | — | 1242 |
| LiveBench Coding | 27.5% | — |
Agentic & Tool Use Not comparable
Amazon Nova Lite: —, Grok 4.1 Fast: 36.3 (#39)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |
Reasoning Grok 4.1 Fast leads
Amazon Nova Lite: 19.3 (#260), Grok 4.1 Fast: 43.4 (#49)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1220 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| LiveBench Reasoning | 36.7% | — |
| DTBench | — | 87.7% |
| LiveBench Data Analysis | 37.2% | — |
| ForecastBench | — | 61 |
| LiveBench | 36.4% | — |
Math Grok 4.1 Fast leads
Amazon Nova Lite: 27.8 (#247), Grok 4.1 Fast: 31.9 (#221)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Math | 1227 | 1408 |
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| Omni-MATH | 23.3% | — |
| LiveBench Math | 36.7% | — |
Knowledge Grok 4.1 Fast leads
Amazon Nova Lite: 26.3 (#259), Grok 4.1 Fast: 33.1 (#207)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| Vectara Hallucination Rate | 6.1% | 17.8% |
| LMArena Expert | 1201 | 1399 |
| Humanity's Last Exam | 3.6% | — |
| MMLU-Pro | 60% | — |
| GPQA (HELM) | 39.7% | — |
| MMLU | 77% | — |
Multimodal Grok 4.1 Fast leads
Amazon Nova Lite: 25.5 (#123), Grok 4.1 Fast: 37.0 (#76)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | 990 | 1201 |
Multilingual Grok 4.1 Fast leads
Amazon Nova Lite: 38.0 (#232), Grok 4.1 Fast: 51.0 (#114)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1208 | 1391 |
| LMArena Chinese | 1225 | 1441 |
| LMArena French | 1237 | 1415 |
| LMArena German | 1229 | 1404 |
| LMArena Japanese | 1153 | 1349 |
| LMArena Korean | 1153 | 1361 |
| LMArena Russian | 1216 | 1387 |
| LMArena Spanish | 1226 | 1413 |
Instruction Following Grok 4.1 Fast leads
Amazon Nova Lite: 59.3 (#255), Grok 4.1 Fast: 72.7 (#133)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1205 | 1376 |
| LiveBench Instruction Following | 54.1% | — |
| IFEval | 77.6% | — |
Long Context Grok 4.1 Fast leads
Amazon Nova Lite: 37.4 (#217), Grok 4.1 Fast: 42.4 (#126)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1234 | 1390 |
Writing & Preference Grok 4.1 Fast leads
Amazon Nova Lite: 42.1 (#237), Grok 4.1 Fast: 57.2 (#131)
| Benchmark | Amazon Nova Lite | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1229 | 1408 |
| LMArena Creative Writing | 1197 | 1394 |
| LMArena Multi-Turn | 1199 | 1389 |
| EQ-Bench Creative Writing | — | 1327 |
| WildBench | 75% | — |
| LiveBench Language | 25.9% | — |
Frequently asked questions
Is Amazon Nova Lite better than Grok 4.1 Fast?
Grok 4.1 Fast is the stronger model overall, scoring 41.4 to 31.9 on the Noometry Index. Amazon Nova Lite costs 2.6× less per token, which makes it the better buy when Grok 4.1 Fast's lead doesn't matter for your workload.
Which is cheaper, Amazon Nova Lite or Grok 4.1 Fast?
Amazon Nova Lite is cheaper. It lists at $0.06 per million input tokens and $0.24 per million output tokens; Grok 4.1 Fast lists at $0.20 and $0.50.
Is Amazon Nova Lite or Grok 4.1 Fast better for coding?
Grok 4.1 Fast scores higher on coding benchmarks: 34.1 versus 32.5 in the Noometry coding category.
Which has the bigger context window?
Amazon Nova Lite does, with 300K tokens against 128K.
How many benchmarks do Amazon Nova Lite and Grok 4.1 Fast share?
20 benchmarks have published results for both models. Amazon Nova Lite has 34 scored results on Noometry and Grok 4.1 Fast has 32.