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xAI’s Grok API first appeared in launch coverage in October 2024, then received an official public-beta announcement on November 4. The initial offering was described as a single model identifier, grok-beta, with function calling; today, xAI’s API reference lists a much broader set of inference resources. The launch-era prices and free-credit offer have expired, so developers planning an integration should use xAI’s current model and pricing pages.
When did xAI launch the Grok API?
The public rollout has two relevant dates. On October 21, 2024, TechCrunch reported that xAI’s API had arrived, following an August promise to make Grok available to developers. xAI’s official news archive later listed the public beta as starting November 4, 2024. These accounts describe the early reported arrival and the subsequent formal public-beta announcement, not a launch happening now.
In its October report, TechCrunch described one API model identifier, grok-beta, but said its exact mapping to the Grok versions available at the time was unclear. It would be misleading to treat that identifier as a confirmed alias for a particular current or historical Grok model. TechCrunch’s October 21, 2024 report gives the early account; xAI’s news archive records the November 4 public-beta announcement.
What could developers do with the API at launch?
Call Grok from software
The API gave developers a way to send requests to Grok from their own applications and services rather than using only a consumer-facing interface. The October 2024 coverage described function calling: a model could connect to external tools, such as a database or search engine, as part of an application workflow. That capability is distinct from the model itself having unrestricted access to those tools; developers have to build and authorize the integrations.
Use the initial model and pricing carefully
TechCrunch reported the initial grok-beta model at $5 per million input tokens and $15 per million output tokens. Those were reported 2024 rates for that launch-era model, not current prices or a guide to what a new account will be charged today. xAI’s official archive also said the public beta included $25 in API credits per month through the end of 2024. That was a time-limited historical offer, not an ongoing monthly benefit. The archive’s API Public Beta entry is the source for the credit offer.
How did the API offering change after launch?
By April 9, 2025, TechCrunch reported that developers could access Grok 3 and Grok 3 Mini through the API. That report cited a maximum context of 131,072 tokens for Grok 3 and launch-era prices. Those figures describe the offering reported at that time; they should not be treated as current model limits or rates. Model identifiers, context limits, and prices can change, so check the live documentation before designing around them. TechCrunch’s April 9, 2025 report provides the dated details.
The current xAI REST API reference, last updated September 14, 2026, lists inference resources for Responses, Chat Completions, Images, Videos, Voice, Files, Batches, and Models. It also says the API is compatible with the OpenAI REST API. That breadth does not mean every model supports every input or output type: check the relevant model’s documentation before choosing an endpoint. The xAI REST API reference is the current technical starting point.
How do developers authenticate and choose an endpoint?
For inference requests, xAI’s reference specifies the https://api.x.ai host and an Authorization: Bearer <xAI API key> header. Management APIs use a separate management API key and host; do not substitute one credential for the other. Consult the current reference for the specific endpoint and request format you plan to use.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesThe pricing page distinguishes the global endpoint from a US regional endpoint. xAI says US regional endpoint usage is billed at 1.1 times global token rates, a 10% premium. It also warns that model availability may vary by geography or account limitations. Confirm current access and any relevant processing or storage assurances in the live documentation rather than assuming that regional inference establishes broader data-handling terms. xAI’s model documentation and its pricing page should be checked close to implementation; the pricing page was last updated September 29, 2026.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.When should a developer use batch requests?
Real-time requests are intended for responses needed immediately. Batch requests are queued and processed asynchronously, making them a possible fit for work that does not need an immediate result. According to xAI’s pricing documentation, batch discounts vary by model, most jobs typically complete within 24 hours, and batch requests do not count toward rate limits. The completion time is typical, not a guaranteed deadline. xAI’s batch guide explains the workflow; check the current pricing page for model-specific costs.
Quick Recap
What should you verify before integrating?
- Model access: Confirm the model ID is available to your account and region, and verify its supported input and output types.
- Current price and limits: Use the live pricing and model pages rather than the 2024
grok-betarates or 2025 Grok 3 figures. - Endpoint and credentials: Match the inference or management API to the correct host and key type.
- Workload timing: Choose real-time inference for immediate responses; consider batch for asynchronous work that can tolerate queueing.
- Regional requirements: Account for the US endpoint’s 10% token-rate premium and separately review the current documentation for applicable data-handling assurances.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
