Model comparison
Seed 2.0 Pro vs Grok 4 Fast
Seed 2.0 Pro is the stronger model overall, scoring 42.5 to 39.0 on the Noometry Index.
Last verified . 17 shared benchmarks.
ByteDance SeedSummary
- They share 17 benchmarks with published results for both. Seed 2.0 Pro scores higher in 7 categories and Grok 4 Fast in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 43.6.
Side by side
| Seed 2.0 Pro | Grok 4 Fast | |
|---|---|---|
| Provider | ByteDance Seed | xAI |
| Noometry Index | 42.5 | 39.0 |
| Released | 2026-02-14 | 2025-09-19 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.50 | — |
| Output $ / M tokens | $3 | — |
| Results tracked | 20 | 30 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Seed 2.0 Pro leads
Seed 2.0 Pro: 42.9 (#84), Grok 4 Fast: 32.3 (#264)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Coding | 1472 | 1429 |
| LMArena WebDev | — | 1160 |
| WeirdML | — | 42.9% |
Agentic & Tool Use Not comparable
Seed 2.0 Pro: —, Grok 4 Fast: 29.3 (#80)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |
Reasoning Too close to call
Seed 2.0 Pro: 23.1 (#167), Grok 4 Fast: 22.5 (#179)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Hard Prompts | 1453 | 1413 |
| ARC-AGI-2 | — | 5.3% |
| Kagi LLM Benchmark | — | 66.1% |
| NYT Connections (extended) | 28.4% | — |
| ARC-AGI-1 | — | 48.5% |
| Thematic Generalization | 57.1% | — |
| DTBench | — | 82.7% |
| Epoch Capabilities Index | — | 144.21 |
| ForecastBench | — | 60.5 |
Math Too close to call
Seed 2.0 Pro: 36.5 (#110), Grok 4 Fast: 36.1 (#126)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1440 | 1419 |
Knowledge Seed 2.0 Pro leads
Seed 2.0 Pro: 39.6 (#119), Grok 4 Fast: 31.5 (#211)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Expert | 1440 | 1411 |
| Vectara Hallucination Rate | — | 19.7% |
Multimodal Not comparable
Seed 2.0 Pro: 40.8 (#34), Grok 4 Fast: —
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Vision | 1275 | — |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.8 (#37), Grok 4 Fast: 51.5 (#106)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1442 | 1397 |
| LMArena Chinese | 1490 | 1458 |
| LMArena French | 1470 | 1433 |
| LMArena German | 1443 | 1383 |
| LMArena Japanese | 1408 | 1358 |
| LMArena Korean | 1412 | 1359 |
| LMArena Russian | 1450 | 1387 |
| LMArena Spanish | 1460 | 1414 |
Instruction Following Seed 2.0 Pro leads
Seed 2.0 Pro: 74.7 (#86), Grok 4 Fast: 73.4 (#116)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1414 | 1388 |
Long Context Grok 4 Fast leads
Seed 2.0 Pro: 43.6 (#85), Grok 4 Fast: 63.2 (#3)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Longer Query | 1428 | 1415 |
| Fiction.LiveBench | — | 94.4% |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 63.0 (#66), Grok 4 Fast: 60.2 (#96)
| Benchmark | Seed 2.0 Pro | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1448 | 1407 |
| LMArena Creative Writing | 1406 | 1388 |
| LMArena Multi-Turn | 1441 | 1414 |
Frequently asked questions
Is Seed 2.0 Pro better than Grok 4 Fast?
Seed 2.0 Pro is the stronger model overall, scoring 42.5 to 39.0 on the Noometry Index.
Is Seed 2.0 Pro or Grok 4 Fast better for coding?
Seed 2.0 Pro scores higher on coding benchmarks: 42.9 versus 32.3 in the Noometry coding category.
How many benchmarks do Seed 2.0 Pro and Grok 4 Fast share?
17 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Grok 4 Fast has 30.