Pricing
Model Overview
Tracked token-pricing fields for this model family. Empty pricing fields stay hidden until the source publishes them.
| Price field | Value |
|---|---|
| Input | $3.00 / 1M tokens |
| Output | $15.00 / 1M tokens |
| Source | Grok 4.20 Beta pricing |
| Verified | Apr 2, 2026 (High) |
Surface
Capabilities
Input and output modalities, enabled feature flags, strengths, and tradeoffs.
| Attribute | Values |
|---|---|
| Modalities | textimage totext |
| Capabilities | reasoningwebSearchimageInputbatchSupportpromptCachingfunctionCallingstructuredOutputs |
| Strengths | Flagship Grok family, Very large context |
| Tradeoffs | Beta lifecycle, Higher cost than Fast |
References
Official Links
Canonical launch, documentation, pricing, and release-note URLs.
| Reference | URL |
|---|---|
| Intro | https://docs.x.ai/developers/models |
| Docs | https://docs.x.ai/developers/models |
| Pricing | https://docs.x.ai/developers/models |
| Release note | https://docs.x.ai/docs/release-notes |
Coverage
Benchmark Coverage
Reported benchmark families, versions, scores, sources, and notes.
| Benchmark | Version | Score | Date | Source | Notes |
|---|
Lifecycle
Release History
Lifecycle transitions and release timeline for this model family.
| Release | Alias | Lifecycle | Release Date | Deprecation | Shutdown | Summary |
|---|---|---|---|---|---|---|
| Grok 4.20 Beta | grok-4-20-beta | Preview | Feb 18, 2026 | — | — | Current published model family snapshot. |
Surfaces
Host Coverage
Provider-specific hosting, context, pricing notes, feature differences, and provider-status context.
| Host | Type | Context | Pricing Note | Differences |
|---|---|---|---|---|
| xAI API | first-party | 2.0M | Reference access to flagship Grok beta families. | Structured outputs; Image input |
Migration
Migration Guidance
Documented migration summary, successor families, and known breaking changes.
| Topic | Details |
|---|---|
| Summary | Primary upgrade target from Grok 4 Fast when higher reasoning depth matters. |
| Replacement models | grok-4-fast |
Timeline
Change Events
Cataloged model-family updates and source references.
| Date | Type | Title | Description | Source |
|---|---|---|---|---|
| Feb 18, 2026 | family_added | Grok 4.20 Beta published | Initial public model family launch. | Grok 4.20 Beta release notes |
From xAI