Model comparison
Grok 4.20 Multi-Agent vs Grok 4.3
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.8 on the Noometry Index.
Last verified . 20 shared benchmarks.
Summary
- They share 20 benchmarks with published results for both. Grok 4.20 Multi-Agent scores higher in 7 categories and Grok 4.3 in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 40.4.
- The biggest single-benchmark swing is NYT Connections (extended): 89.6% for Grok 4.20 Multi-Agent and 55.2% for Grok 4.3.
- Both cost about the same: $1.25 input and $2.50 output per million tokens.
Side by side
| Grok 4.20 Multi-Agent | Grok 4.3 | |
|---|---|---|
| Provider | xAI | xAI |
| Noometry Index | 46.2 | 43.8 |
| Released | 2026-03-09 | 2026-04-17 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 1M |
| Max output | 30K | 30K |
| Input $ / M tokens | $1.25 | $1.25 |
| Output $ / M tokens | $2.50 | $2.50 |
| Results tracked | 20 | 40 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.0 (#92), Grok 4.3: 41.6 (#121)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Coding | 1457 | 1415 |
| LMArena WebDev | — | 1357 |
| SciCode | — | 47.3% |
| WeirdML | — | 49.9% |
| ALE-Bench | — | 944.17 |
Agentic & Tool Use Not comparable
Grok 4.20 Multi-Agent: —, Grok 4.3: 27.7 (#99)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Search | 1204 | 1165 |
| GDP.pdf | — | 8% |
| Vending-Bench 2 | — | 35.26 |
Reasoning Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.9 (#48), Grok 4.3: 35.9 (#68)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| NYT Connections (extended) | 89.6% | 55.2% |
| LMArena Hard Prompts | 1448 | 1396 |
| CritPt | — | 8% |
| Chess Puzzles | — | 25% |
| DTBench | — | 90.7% |
| LMCA | — | 38.3% |
| Epoch Capabilities Index | — | 149.16 |
| ForecastBench | — | 60.3 |
Math Grok 4.3 leads
Grok 4.20 Multi-Agent: 39.4 (#104), Grok 4.3: 46.0 (#74)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Math | 1442 | 1388 |
| FrontierMath (Tiers 1-3) | — | 42.8% |
| FrontierMath Tier 4 | — | 14.6% |
| OTIS Mock AIME 2024-2025 | — | 93.3% |
| ProofBench | — | 11% |
Knowledge Grok 4.3 leads
Grok 4.20 Multi-Agent: 40.4 (#119), Grok 4.3: 52.5 (#62)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Expert | 1445 | 1385 |
| GPQA Diamond | — | 88.8% |
| SimpleQA Verified | — | 33.2% |
Multimodal Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 40.5 (#48), Grok 4.3: 31.6 (#104)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Vision | 1259 | 1229 |
| Blueprint-Bench 2 | — | 0% |
Multilingual Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 54.4 (#43), Grok 4.3: 50.5 (#120)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Non-English | 1440 | 1385 |
| LMArena Chinese | 1475 | 1422 |
| LMArena French | 1466 | 1412 |
| LMArena German | 1456 | 1395 |
| LMArena Japanese | 1405 | 1379 |
| LMArena Korean | 1416 | 1356 |
| LMArena Russian | 1457 | 1399 |
| LMArena Spanish | 1447 | 1398 |
Instruction Following Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 74.8 (#84), Grok 4.3: 72.1 (#140)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Instruction Following | 1420 | 1366 |
Long Context Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 43.7 (#88), Grok 4.3: 42.5 (#123)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Longer Query | 1431 | 1393 |
Writing & Preference Grok 4.20 Multi-Agent leads
Grok 4.20 Multi-Agent: 64.0 (#59), Grok 4.3: 58.5 (#118)
| Benchmark | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| LMArena Text | 1450 | 1397 |
| LMArena Creative Writing | 1436 | 1380 |
| LMArena Multi-Turn | 1452 | 1406 |
| EQ-Bench 4 | — | 1075 |
Frequently asked questions
Is Grok 4.20 Multi-Agent better than Grok 4.3?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 43.8 on the Noometry Index.
Which is cheaper, Grok 4.20 Multi-Agent or Grok 4.3?
Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.
Is Grok 4.20 Multi-Agent or Grok 4.3 better for coding?
Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 41.6 in the Noometry coding category.
Which has the bigger context window?
Both accept 1M tokens.
How many benchmarks do Grok 4.20 Multi-Agent and Grok 4.3 share?
20 benchmarks have published results for both models. Grok 4.20 Multi-Agent has 20 scored results on Noometry and Grok 4.3 has 40.