Vercel AI Gateway
The llmpricing.dev aggregator page explicitly names the exact variant xai/grok-4.20-0309-non-reasoning and confirms its availability through Vercel AI Gateway under the slug spacexai/grok-4.20-non-reasoning, listing Vercel as a cloud provider at $1.25 per million input tokens and $2.50 per million output tokens with a The same source flags operational inconsistencies that matter for developers: providers report context limits ranging from 262,000 to 2,000,000 tokens and output limits that diverge from the reference 30,000-token cap (Vercel's listing shows a 2,000,000-token context alongside a flagged 2,000,000-token output limit), a
