Model comparison
Grok 4.5 vs Nova 2 Lite
Grok 4.5 is the stronger model overall, scoring 55.0 to 39.7 on the Noometry Index. Nova 2 Lite costs 3.5× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Grok 4.5 scores higher in 9 categories and Nova 2 Lite in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 27.5.
- Nova 2 Lite is cheaper at $0.30 / $2.50 per million input/output tokens, against $2 / $6 for Grok 4.5.
- Nova 2 Lite accepts more context: 1M tokens versus 500K.
Side by side
| Grok 4.5 | Nova 2 Lite | |
|---|---|---|
| Provider | xAI | Amazon |
| Noometry Index | 55.0 | 39.7 |
| Released | 2026-07-08 | 2025-12-01 |
| Weights | Proprietary | Proprietary |
| Context window | 500K | 1M |
| Max output | 500K | 64K |
| Input $ / M tokens | $2 | $0.30 |
| Output $ / M tokens | $6 | $2.50 |
| Results tracked | 52 | 19 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Grok 4.5 leads
Grok 4.5: 52.2 (#35), Nova 2 Lite: 40.7 (#134)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Coding | 1474 | 1385 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1553 | — |
| SciCode | 54.1% | — |
| WeirdML | 46.4% | — |
| ALE-Bench | 1,309 | — |
Agentic & Tool Use Grok 4.5 leads
Grok 4.5: 44.4 (#17), Nova 2 Lite: 24.1 (#121)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| APEX-Agents | 56.2% | — |
| Berkeley Function Calling Leaderboard | — | 27.1% |
| τ²-bench Banking | 47.9% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| GDP.pdf | 14% | — |
| LMArena Search | 1213 | — |
| Vending-Bench 2 | 3,887 | — |
Reasoning Grok 4.5 leads
Grok 4.5: 56.1 (#25), Nova 2 Lite: 27.5 (#118)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Hard Prompts | 1462 | 1364 |
| ARC-AGI-2 | 52.6% | — |
| SimpleBench | 70% | — |
| Kagi LLM Benchmark | 83.5% | — |
| NYT Connections (extended) | 79.9% | — |
| ARC-AGI-1 | 87.2% | — |
| CritPt | 15.4% | — |
| Chess Puzzles | 36% | — |
| DTBench | 96.5% | — |
| LMCA | 45.2% | — |
| Surface Evolver Bench | 74.4% | — |
| Epoch Capabilities Index | 153.92 | — |
Math Grok 4.5 leads
Grok 4.5: 60.9 (#35), Nova 2 Lite: 37.5 (#156)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Math | 1459 | 1359 |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| OTIS Mock AIME 2024-2025 | 97.8% | — |
| ProofBench | 31% | — |
Knowledge Grok 4.5 leads
Grok 4.5: 62.3 (#24), Nova 2 Lite: 43.0 (#94)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Expert | 1466 | 1358 |
| GPQA Diamond | 93.4% | — |
| SimpleQA Verified | 48.3% | — |
| Vectara Hallucination Rate | — | 5.1% |
Multimodal Not comparable
Grok 4.5: 37.6 (#72), Nova 2 Lite: —
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Vision | 1288 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |
Multilingual Grok 4.5 leads
Grok 4.5: 54.4 (#42), Nova 2 Lite: 47.1 (#153)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Non-English | 1440 | 1337 |
| LMArena Chinese | 1496 | 1364 |
| LMArena French | 1456 | 1381 |
| LMArena German | 1446 | 1343 |
| LMArena Japanese | 1428 | 1271 |
| LMArena Korean | 1404 | 1284 |
| LMArena Russian | 1448 | 1343 |
| LMArena Spanish | 1450 | 1373 |
Instruction Following Grok 4.5 leads
Grok 4.5: 76.0 (#48), Nova 2 Lite: 70.5 (#161)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Instruction Following | 1446 | 1335 |
Long Context Grok 4.5 leads
Grok 4.5: 44.8 (#56), Nova 2 Lite: 40.6 (#150)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Longer Query | 1463 | 1335 |
Writing & Preference Grok 4.5 leads
Grok 4.5: 65.8 (#42), Nova 2 Lite: 53.9 (#154)
| Benchmark | Grok 4.5 | Nova 2 Lite |
|---|---|---|
| LMArena Text | 1448 | 1362 |
| LMArena Creative Writing | 1442 | 1291 |
| LMArena Multi-Turn | 1456 | 1338 |
| EQ-Bench Creative Writing | 1579 | — |
Frequently asked questions
Is Grok 4.5 better than Nova 2 Lite?
Grok 4.5 is the stronger model overall, scoring 55.0 to 39.7 on the Noometry Index. Nova 2 Lite costs 3.5× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Which is cheaper, Grok 4.5 or Nova 2 Lite?
Nova 2 Lite is cheaper. It lists at $0.30 per million input tokens and $2.50 per million output tokens; Grok 4.5 lists at $2 and $6.
Is Grok 4.5 or Nova 2 Lite better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 40.7 in the Noometry coding category.
Which has the bigger context window?
Nova 2 Lite does, with 1M tokens against 500K.
How many benchmarks do Grok 4.5 and Nova 2 Lite share?
17 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Nova 2 Lite has 19.