X Introduces New grok-4.1 Models with Enhanced Image Input Pricing and Tool Calling Features
What happened
Between the Oct 11, 2025 and Jan 5, 2026 captures of X's pricing page, Pulse recorded 6 changes: grok-3 model removed from main pricing table; Image Input pricing capability added to grok-4.1-fast models at $0.20/M tokens; grok-3-mini model removed from main pricing table; Tool calling feature enhanced with Agent Tools API supporting both server-side and client-side tool calling; grok-4-1-fast-reasoning model added: $0.20/M tokens input, $0.50/M tokens output, 2M context; grok-4-1-fast-non-reasoning model added: $0.20/M tokens input, $0.50/M tokens output, 2M context. Pulse files it as a packaging change (plan removed, feature added, feature change, new plan). Pulse's latest capture (Nov 9, 2026) lists grok-4.7 at $0.50 per 1M input tokens (cached) + $6 per 1M output tokens, grok-4.20-0309-reasoning at $2.50 per 1M output tokens + $0.40 per 1M input tokens (cached, long context), grok-imagine-video at $0.07 per output second (720p) + $0.01 per input second of video, grok-4.6 at $6 per 1M output tokens + $0.50 per 1M input tokens (cached) and grok-4.5 at $0.60 per 1M input tokens (cached, long context) + $2 per 1M input tokens.
X's previous recorded change was "X Introduces Grok-4 Flagship Model with 256k Context Window and New Enterprise Features" (Q3 2025). X has been tracked since 2025-10-11.
In the same window You.com, Synthesia, Read AI and Topaz Labs also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Removed—Plangrok-3 modelNot listed
- AddedImage InputFeature
BeforeNot listed
AfterImage Input pricing capability
- Removed—Plangrok-3-mini modelNot listed
- Feature change—Feature
Tool calling feature enhanced with Agent Tools API supporting both server-side and client-side tool calling
- Added—Plan
BeforeNot listed
Aftergrok-4-1-fast-reasoning model
- Added—Plan
BeforeNot listed
Aftergrok-4-1-fast-non-reasoning model
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| — | Plan | grok-3 model | Not listed | Removed |
| Image Input | Feature | Not listed | Image Input pricing capability | Added |
| — | Plan | grok-3-mini model | Not listed | Removed |
| — | Feature | Tool calling feature enhanced with Agent Tools API supporting both server-side and client-side tool calling | Feature change | |
| — | Plan | Not listed | grok-4-1-fast-reasoning model | Added |
| — | Plan | Not listed | grok-4-1-fast-non-reasoning model | Added |
Values as written on X's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of X's pricing page (x.ai) from Oct 11, 2025 and Jan 5, 2026; the change is marked in the lower part of the page, where the grok-3 model no longer appears.
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The two full-page captures with this change marked up are free with an account.
X, the last 90 days
Full history- May 19, 2026ImprovementX updates capabilities: New video generation feature added with audio.
- May 5, 2026Price decreaseX debuts grok-4.3 at $1.25/$2.50 per 1M tokens, slashes grok-4.20 rates
- Feb 18, 2026ImprovementX adds real-time voice AI, drops structured outputs from API
- Q4 2025PackagingX Introduces New grok-4.1 Models with Enhanced Image Input Pricing and Tool Calling Features This change
- Q3 2025PackagingX Introduces Grok-4 Flagship Model with 256k Context Window and New Enterprise Features
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- You.comOct 26You.com adds Inference Router API to run open-weight models via one endpoint
- You.comAug 4You.com: Web Search API now freemium (free 100/day + $5/1k after)
- SynthesiaNov 9Synthesia swaps Syren AI time cap for tiered video quotas, cuts Basic assets
- Read AINov 9Read AI: EU & CA hosting added to Enterprise+ plan
- Topaz LabsNov 9Topaz Labs ends web sale: Pro back to $599/yr, Video $299, Image $199
Questions about this change
Did X raise prices in January 2026?
No list-price increase was recorded between Oct 11, 2025 and Jan 5, 2026. The change Pulse detected was a packaging change: plan removed, feature added, feature change, new plan.
What changed on X's pricing page between Oct 11, 2025 and Jan 5, 2026?
Plan removed: grok-3 model; Image Input feature added: Image Input pricing capability; plan removed: grok-3-mini model; Tool calling feature enhanced with Agent Tools API supporting both server-side and client-side tool calling; plan added: grok-4-1-fast-reasoning model; plan added: grok-4-1-fast-non-reasoning model. Pulse compared the captures it took on Oct 11, 2025 and Jan 5, 2026; the before/after table above lists each item as written on the page.
How often does X change its pricing?
Pulse recorded 1 other pricing-page change for X in the 90 days before this one; the previous change was "X Introduces Grok-4 Flagship Model with 256k Context Window and New Enterprise Features" in Q3 2025; X has been tracked since 2025-10-11.