Skip to content
AI Atlas
ModelActiveIdentity probable

Grok 4.20 Multi-Agent

xAIfamily · Grok 4.20docs.x.ai/developers/models/grok-4.20-multi-agen

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...

Open in Graph
data quality57

Updated 4 h ago · first seen 11 Sept 2026

model_01M294WW227TBTN9Q3PY5N8PCX

Overview

Identity

Canonical model
Yesidentity confidence: mediumOne row per real model release. Artifacts (checkpoints, quantisations, conversions) and folded evaluation variants point here.
Official checkpoints
None recordedofficial_checkpoints = hf_repo identifiers carried by the model itself; artifacts are separate entities pointing here through canonical_id.
Artifacts
None recordedSeparate entities (checkpoint · quantization · conversion · packaging) pointing to this model through canonical_id.
Provider deployments
2
API aliases
grok-4.20-multi-agent-0309x-ai/grok-4.20-multi-agentIdentifiers under which providers and evaluators refer to this model.
Folded evaluation variants
0Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.

Openness

Openness not classified yet — no sourced evidence to place this model in the ontology.

Key facts

Release date

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Knowledge cutoff

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Official page
docs.x.ai/developers/models/grok-4.20-multi-agent-0309

Source:xAI — docsT1observed 14 h agohigh

API model id

Source:xAI — docsT1observed 14 h agohigh

Openrouter id

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Architecture

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Capabilities

Modalities

Modalities
imagetext
Input
textimage
Output
text

Capabilities

  • Tool calling

    Yes

    xAI — docs · T1

  • Structured output

    Yes

    OpenRouter public model & pricing listing · T2

  • Reasoning

    Yes

    OpenRouter public model & pricing listing · T2

  • Vision

    Yes

    OpenRouter public model & pricing listing · T2

  • Audio

    Unavailable

  • Fine-tuning available

    Unavailable

Context window

Source:xAI — docsT1observed 14 h agohigh

Max output

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Knowledge cutoff

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 16 h agomedium

Providers & Pricing3

All offers in the price terminal →
Provider deployments, cheapest output first
ProviderContextInput / 1MCached inOutput / 1MBatch in / outNative unitsStatusObservedSource
OpenRoutercheapest outputx-ai/grok-4.20-multi-agent2Mout 1.8M$0.20——active15 min agosince 12 Sept 2026openrouter.aiT2
xAI APIgrok-4.20-multi-agent-03091M$0.20$1 / $2long_context_input_per_mtok=2.5long_context_output_per_mtok=5long_context_cached_input_per_mtok=0.4active15 min agosince 11 Sept 2026docs.x.aiT1
xAI APIx-ai/grok-4.20-multi-agent2Mout 1.8M$0.20——active7 h agosince 11 Sept 2026openrouter.aiT2

USD per 1M tokens as published by each provider; native units (per-request fees, flex/priority tiers) are kept verbatim. Rows are append-only — every price change is kept in the history below. Cost of a workload →

Price history

Step lines per provider; amber markers are recorded changes. Click a marker or a row for the evidence behind that price.

Output price · USD / 1M tokens 2 providers

Output price history of Grok 4.20 Multi-Agent$0$1$2$3Sept 26Sept 26Sept 26Sept 26Sept 26xAI API: first observed → $2.5 · 11 Sept 2026OpenRouter: first observed → $2.5 · 12 Sept 2026
  • xAI API
  • OpenRouter
  • OpenRouterfirst observed $2.512 Sept 2026
  • xAI APIfirst observed $2.511 Sept 2026

Input price · USD / 1M tokens 2 providers

Input price history of Grok 4.20 Multi-Agent$0$0.50$1$1.5Sept 26Sept 26Sept 26Sept 26Sept 26xAI API: first observed → $1.25 · 11 Sept 2026OpenRouter: first observed → $1.25 · 12 Sept 2026
  • xAI API
  • OpenRouter
  • OpenRouterfirst observed $1.2512 Sept 2026
  • xAI APIfirst observed $1.2511 Sept 2026

Versions & Artifacts0

Version history

Context window1 change

11 Sept 2026→11 Sept 2026current

Knowledge cutofffirst observation only

11 Sept 2026current

Max outputfirst observation only

11 Sept 2026current

Each hop is a claim: click a value for its source, tier and observation time. Nothing is overwritten — a new observation closes the previous claim.

Artifacts 0

No artifact (checkpoint, quantisation, conversion or packaging) points to this model yet.

Timeline3

Full timeline →
  • Capabilities changedModelGrok 4.20 Multi-AgentxAI

    Grok 4.20 Multi-Agent: modalities changed from ["document", "image", "text"] to ["image", "text"]

    Modalitiesdocument, image, text→image, textxai
    docs.x.ai
  • Listed by providerModelGrok 4.20 Multi-AgentxAI

    OpenRouter lists Grok 4.20 Multi-Agent at $1.25 in / $2.5 out per 1M tokens

    openrouter
    openrouter.ai
  • Capabilities changedModelGrok 4.20 Multi-AgentxAI

    Grok 4.20 Multi-Agent: modalities changed from ["image", "text"] to ["document", "image", "text"]

    Modalitiesimage, text→document, image, textopenrouter
    openrouter.ai

Change history41

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.

Viewing AI Atlas as of 12 Aug 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

Grok 4.20 Multi-Agent was not yet in AI Atlas on 12 Aug 2026

First seen 11 Sept 2026. Nothing is inferred backwards: no attribute is shown for dates before the first observation.
41 claims · 22 properties14 conflicting

Familyfamily1

Claim history for Family
ValueValid from → toStatusSourceConfidenceExtractor
Grok → currentcurrentxAI — docsT1highdeterministic

Release daterelease_date1

Claim history for Release date
ValueValid from → toStatusSourceConfidenceExtractor
31 Mar 2026 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Context windowcontext_length7conflicting claims

Claim history for Context window
ValueValid from → toStatusSourceConfidenceExtractor
2M tokens → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
2M tokens → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
2M tokens → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
2M tokens → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
2M tokens → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
1M tokens → currentcurrentxAI — docsT1conflicteddeterministic
2M tokens → supersededOpenRouter public model & pricing listingT2mediumdeterministic

Max outputmax_output_tokens1

Claim history for Max output
ValueValid from → toStatusSourceConfidenceExtractor
1.8M tokens → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Knowledge cutoffknowledge_cutoff1

Claim history for Knowledge cutoff
ValueValid from → toStatusSourceConfidenceExtractor
Sept 2025 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Modalitiesmodalities4conflicting claims

Claim history for Modalities
ValueValid from → toStatusSourceConfidenceExtractor
document, image, text → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
image, text → currentcurrentxAI — docsT1conflicteddeterministic
document, image, text → supersededOpenRouter public model & pricing listingT2mediumdeterministic
image, text → supersededOpenRouter public model & pricing listingT2mediumdeterministic

Input modalitiesmodalities_input5conflicting claims

Claim history for Input modalities
ValueValid from → toStatusSourceConfidenceExtractor
document, image, text → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
image, text → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
image, text → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
text, image → currentcurrentxAI — docsT1conflicteddeterministic
image, text → supersededOpenRouter public model & pricing listingT2mediumdeterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
ValueValid from → toStatusSourceConfidenceExtractor
text → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Tokenizertokenizer1

Claim history for Tokenizer
ValueValid from → toStatusSourceConfidenceExtractor
Grok → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

API model idapi_model_id1

Claim history for API model id
ValueValid from → toStatusSourceConfidenceExtractor
grok-4.20-multi-agent-0309 → currentcurrentxAI — docsT1highdeterministic

Official pageofficial_url1

Claim history for Official page
ValueValid from → toStatusSourceConfidenceExtractor
https://docs.x.ai/developers/models/grok-4.20-multi-agent-0309 → currentcurrentxAI — docsT1highdeterministic

Batch apibatch_api1

Claim history for Batch api
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentxAI — docsT1highdeterministic

Descriptiondescription1

Claim history for Description
ValueValid from → toStatusSourceConfidenceExtractor
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... → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

File inputfile_input1

Claim history for File input
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
ValueValid from → toStatusSourceConfidenceExtractor
x-ai/grok-4.20-multi-agent → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Openrouter listed atopenrouter_listed_at1

Claim history for Openrouter listed at
ValueValid from → toStatusSourceConfidenceExtractor
31 Mar 2026 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Reasoningreasoning1

Claim history for Reasoning
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Regionsregions1

Claim history for Regions
ValueValid from → toStatusSourceConfidenceExtractor
us-east-1, us-west-2 → currentcurrentxAI — docsT1highdeterministic

Structured outputstructured_output1

Claim history for Structured output
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
ValueValid from → toStatusSourceConfidenceExtractor
include_reasoning, logprobs, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, top_logprobs, top_p → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Tool callingtool_calling7conflicting claims

Claim history for Tool calling
ValueValid from → toStatusSourceConfidenceExtractor
No → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
No → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
No → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
No → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
No → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
Yes → currentcurrentxAI — docsT1conflicteddeterministic
No → supersededOpenRouter public model & pricing listingT2mediumdeterministic

Visionvision1

Claim history for Vision
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

22

Source tiers

T1T29 / 13

Freshest observation

4 h ago

Conflicts

14 flagged

Source documents 3

Source documents
SourceDocumentTypeTierLast observedSnapshots
xAI — docsdocs.x.ai/developers/models/grok-4.20-multi-agent-0309.md model_pageT1· Official15 min ago1
xAI — docsdocs.x.ai/developers/models model_docsT1· Official15 min ago11
OpenRouter public model & pricing listingopenrouter.ai/api/v1/models catalogueT2· Quality secondary15 min ago12

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (57/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →