SIDE BY SIDE
Grok 4.20 Multi-Agent vs Grok 4.3
Both are Grok models. Grok 4.3 was added to OpenRouter on 2026-04-30, Grok 4.20 Multi-Agent on 2026-03-31.
| Field | Grok 4.20 Multi-Agent | Grok 4.3 |
|---|---|---|
| Provider | SpaceXAI | SpaceXAI |
| Family | Grok | Grok |
| Province | Snow Country | Snow Country |
| Context window | 2M tokens | 1M tokens |
| Maximum output | 1.8M tokens | 900K tokens |
| Input / 1M tokens | $1.25 | $1.25 |
| Output / 1M tokens | $2.50 | $2.50 |
| Accepts | text, files, images | text, files, images |
| Produces | text | text |
| Reasoning | Yes | Yes |
| Tool use | No | Yes |
| Added to OpenRouter | 2026-03-31 | 2026-04-30 |
| Model ID | x-ai/grok-4.20-multi-agent | x-ai/grok-4.3 |
Questions and answers
Which is cheaper, Grok 4.20 Multi-Agent or Grok 4.3?
They cost the same: $1.25 per million input tokens and $2.50 per million output tokens.
Which has the larger context window?
Grok 4.20 Multi-Agent: 2M tokens against 1M for Grok 4.3 (2× as long).
What can one do that the other cannot?
Only Grok 4.3 supports tool use.
Answers are computed from the 2026-10-24 catalog snapshot.