Verified history
This means HyperObserve has not found sufficient first-party evidence for a dated before-and-after event. It does not mean Grok has never changed. Undated values are kept in the current baseline below instead of being presented as history.
Current monitored baseline
HyperObserve currently monitors 4 scoped observations for Grok. The baseline covers Grok 4.6 context, per-model rate dimensions, Files API upload size, Grok app file size. Each value retains its plan, product, endpoint, region, account, or runtime qualifier so a future change can be compared against the correct scope.
| Constraint | Current value | Scope | Verified source |
|---|---|---|---|
| Grok 4.6 contextRequests above 200K context have separate documented pricing. | 500,000 tokens | xAI API model grok-4.6 | xAIAug 22, 2026 |
| per-model rate dimensionsThe per-second request limit is derived from the minute budget and prevents full-minute bursts. | RPS and TPM vary by model and cumulative-spend tier | Per xAI API team | xAIAug 22, 2026 |
| Files API upload sizeThe API exposes separate initialize and chunk-upload operations. | 50 MB per file | xAI Files API | xAIAug 22, 2026 |
| Grok app file sizeDocuments, images, code, and audio use this general app allowance; behavior can vary by platform or subscription. | Most supported files: up to 150 MB each | Grok website and apps | xAIAug 22, 2026 |
Tracked constraints and impact
xAI model context, per-model RPS and TPM, Files API, and app uploads. A change is recorded only when it alters a constraint developers can act on, such as capacity planning, request shaping, model selection, deployment configuration, storage design, retry behavior, or account budgeting.
Grok 4.6 Context Window
Grok 4.6 Context Window, verified against Grok's official documentation with scope, implementation impact, caveats, and a direct check.
xAI Grok API Rate Limits
xAI Grok API Rate Limits, verified against Grok's official documentation with scope, implementation impact, caveats, and a direct check.
xAI Files API Upload Limit
xAI Files API Upload Limit, verified against Grok's official documentation with scope, implementation impact, caveats, and a direct check.
Grok App File Upload Limits
Grok App File Upload Limits, verified against Grok's official documentation with scope, implementation impact, caveats, and a direct check.
How a change is verified
- Compare the current first-party statement with the previously stored observation, including the exact plan, model, runtime, endpoint, region, and account scope.
- Separate a true product change from documentation clarification, temporary capacity, configurable account state, or a limit that applies to a different execution path.
- Preserve the old and new values, official source, effective date when disclosed, detection date, and practical impact. If those elements cannot be supported, no historical event is published.
Official sources monitored
These first-party documents support the current Grok baseline. HyperObserve links directly to them so you can confirm the live wording before making a production decision.
Context window and model-level rate limits
Per-model RPS, TPM, spend tiers, and 429 handling
Files API maximum upload size
Grok app file types and upload sizes