GPT-6 Astra vs Grok Build 0.1 pricing

Prices

GPT-6 Astra and Grok Build 0.1 prices, USD per 1M tokens
USD per 1M tokensGPT-6 AstraGrok Build 0.1
Input$10.00$1.00
Output$50.00$2.00
Cache read$1.00$0.20
Cache write$12.50Not published
Batch input$5.00Not published
Batch output$25.00Not published

Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page

xAI's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Monthly cost by workload

WorkloadGPT-6 AstraGrok Build 0.1
Chatbot1,000 in / 500 out tokens, 10,000 requests a day$10,500/mo$600.00/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day$15,750/mo$1,350/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input$7,200/mo$660.00/mo

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Context and capabilities

GPT-6 AstraGrok Build 0.1
Context1,050,000 tokens256,000 tokens
Max output128,000 tokens256,000 tokens
Inputtext, image, pdftext, image, pdf
Tool callingYesYes
ReasoningYesYes
Structured outputsYesYes

Questions

What is the price difference between GPT-6 Astra and Grok Build 0.1?
GPT-6 Astra: $10.00 per 1M input tokens and $50.00 per 1M output tokens. Grok Build 0.1: $1.00 per 1M input tokens and $2.00 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $10,500 per month for GPT-6 Astra and $600.00 for Grok Build 0.1.
Which has the longer context window, GPT-6 Astra or Grok Build 0.1?
GPT-6 Astra has the longer context window: up to 1,050,000 tokens, compared with 256,000 for Grok Build 0.1.
Do GPT-6 Astra and Grok Build 0.1 have prompt caching and batch prices?
GPT-6 Astra: cached input $1.00 per 1M tokens; batch $5.00 per 1M input tokens and $25.00 per 1M output tokens. Grok Build 0.1: cached input $0.20 per 1M tokens; no batch price published.

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