Grok 4.20 Multi Agent beta 0309 vs Grok 4.3
Grok 4.20 Multi Agent beta 0309 vs Grok 4.3: Grok 4.3 is cheaper by 58% on average. Grok 4.20 Multi Agent beta 0309 from xAI (2,000,000-token context, reasoning, tool calls) vs. Grok 4.3 from xAI (1,000,000-token context, reasoning, tool calls). Use Agent Command Center to A/B both in shadow mode and pick the winner per workload.
Side-by-side cost
Live workload comparison
Same workload run through both models. The cheaper one is highlighted.
3,000
02,000,000
400
0200,000
5,000
01,000,000
At this workload, Grok 4.3 is 43% cheaper than Grok 4.20 Multi Agent beta 0309 — a savings of $555/month ($6,666/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
model: grok-4-3
provider: xai
fallback:
model: grok-4-20-multi-agent-beta-0309
provider: xai
shadow: { sample_rate: 0.05 } # mirror 5% of traffic to compare quality live| Grok 4.20 Multi Agent beta 0309 | Grok 4.3 | |
|---|---|---|
| Input price | $2.00/M | $1.25/M |
| Output price | $6.00/M | $2.50/M |
| Context window | 2,000,000 | 1,000,000 |
| Max output | 2,000,000 | 1,000,000 |
| Function calling | ✓ | ✓ |
| Vision | ✓ | ✓ |
| Audio input | — | — |
| Reasoning | ✓ | ✓ |
| Prompt caching | ✓ | ✓ |
| Structured output | — | ✓ |
| Pricing verified | May 12, 2026 | May 12, 2026 |
Benchmark comparison
Side-by-side public benchmark scores. Greener bar = winner.
Chatbot Arena ELOgeneral
Grok 4.20 Multi Agent beta 0309
1,473
Grok 4.3
1,455