xAI API review

xAI keeps its API simple: Grok 4.7 is the recommended model for code, chat and everything else outside media. It costs $2.00 per 1M input tokens and $6.00 per 1M output tokens with a 500K-token context and configurable reasoning, which makes output cheaper than most flagship rivals. Server-side tools cover web search, X search, code execution and remote MCP, and the platform adds a batch API, deferred completions, prompt caching and regional endpoints. A Voice API and Imagine API handle speech, images and video. Rate limits scale through tiers based on cumulative spend since January 1, 2026: Tier 0 at $0, then $50, $250, $1,000 and $5,000, and xAI says tiers never downgrade. The gaps are a missing budget model for high-volume tasks and a context window half the size of the leaders. Grok also has no knowledge of current events unless search tools are on.

Who it is for

Teams that want one flagship model for code and chat with a 500K context and low output prices.

Price

Pay as you go; Grok 4.7 costs $2.00 per 1M input tokens and $6.00 per 1M output tokens.

grok-4.7 Our flagship model for code and everything else: agentic tool calling, minimal hallucinations, configurable reasoning. Context 500k tokens Input $2.00 / 1M tokens
Quoted from the vendor pricing page on November 7, 2026.

Key features

• Grok 4.7 with configurable reasoning and agentic tool calling
• Server-side web search and X search tools
• Batch API, deferred completions and prompt caching
• Voice API for speech to speech, speech to text and text to speech
• Rate limit tiers that never downgrade once reached

Strengths and weaknesses

• Strength: One recommended model for code, chat and tools keeps choice simple
• Strength: Output at $6 per 1M tokens is low for a flagship model
• Strength: Tiers rise automatically at $50, $250, $1,000 and $5,000 in spend
• Weakness: No small, cheap text model in the current lineup
• Weakness: 500K context is half that of OpenAI, Google and Anthropic
• Weakness: No access to current events unless search tools are enabled

Key facts

• Grok 4.7: $2.00 in, $6.00 out per 1M tokens
• Context: 500K tokens
• Knowledge cutoff: May 2026
• Rate limit tiers: Tier 0 at $0 to Tier 4 at $5,000 cumulative spend

Where it ranks

xAI API is No. 6 in our Best LLM APIs verdict.