MODEL PROOF
Grok 4.20 Multi-Agent
NOT INDEPENDENTLY RATED
No independent LMArena score is published for this model.
Base context tier shown; inspect the complete context ladder below.
- Independent LMArena score
- Not independently rated
- Context window
- 2M
- Maximum output
- 1.8M
- Input modalities
- text, image, file
- Output modalities
- text
- Published input price
- $1.25 / 1M tokens
- Published output price
- $2.50 / 1M tokens
- Pricing kind
- fixed
- Context tiers
- Tiered by context
Inspect complete billing conditions and endpoint terms below.
Price from xAI: the cheapest offer that is serving, at standard delivery and at the maker’s precision or better, at its standard rate.
Every price dimension · USD per million tokens
| Input | $1.25/M |
|---|---|
| Output | $2.50/M |
| Cached input | $0.200/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
| Web search | $0.005/call |
The headline rate does not apply to a long-context workload.
Complete context ladder · 1 tier
| More than 200,000 tokens | $2.50/M in (2×) $5.00/M out $0.400/M cached input Unknown/M cache write |
|---|
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
4 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| xAIxai/zdr Endpoint terms
| $1.25 | $2.50 | undeclared | 87.14% |
| xAIxai Endpoint terms
| $1.25 | $2.50 | undeclared | 83.31% |
| xAIxai/zdr/priority Endpoint terms
| $2.50 | $5.00 | undeclared | — |
| xAIxai/priority Endpoint terms
| $2.50 | $5.00 | undeclared | 100.00% |
Independent scores
No independent benchmark has measured this model. Unrated is not a score of zero.
Capability
| Context window | 2M |
|---|---|
| Max output | 1.8M |
| Input modes | text, image, file |
| Tool use | no |
| Reasoning | always on |
| Knowledge cutoff | 2025-09-01 |
| Open weights | Unknown |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-06 |
| Quality data | unrated |
Grok 4.20 Multi-Agent is a variant of SpaceXAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information...
Questions this page answers
What does Grok 4.20 Multi-Agent cost?
$1.25/M in, $2.50/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Grok 4.20 Multi-Agent have an independent quality score?
Grok 4.20 Multi-Agent has no independent quality score in this catalogue. Unrated is not a score of zero.
What beats Grok 4.20 Multi-Agent?
Grok 4.20 Multi-Agent has no independent quality score. Unrated is not a score of zero.
Does this page use Artificial Analysis scores for Grok 4.20 Multi-Agent?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
Does a missing score mean Grok 4.20 Multi-Agent scored zero?
Unrated is not a score of zero.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/x-ai__grok-4.20-multi-agent/)<a href="https://undominated.ai/models/x-ai__grok-4.20-multi-agent/"><img src="https://undominated.ai/badge/x-ai__grok-4.20-multi-agent.svg" alt="Grok 4.20 Multi-Agent — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/x-ai__grok-4.20-multi-agent.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
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