What is Grok 4.1?
Grok 4.1 is xAI's frontier language model, released in November 2025. Built on the same large-scale reinforcement learning infrastructure as Grok 4, it adds improved emotional intelligence, reduced hallucination rates, and more collaborative conversation style. Its hallucination rate dropped from 12.09% (Grok 4) to 4.22% — making it significantly more reliable for production use. It topped the LMArena benchmark on release, ranking #1 in thinking mode and #2 in non-thinking mode.
Grok 4.1 Key Features
The standout technical spec is the 2 million token context window — tied with Gemini for the largest context of any API model in 2025, and 10x larger than Claude Sonnet 4.5 at the time. This makes Grok 4.1 uniquely capable for processing entire codebases, very long legal documents, or extended agent conversations that accumulate context over time.
Grok 4.1 has two modes: Thinking mode (internal reasoning before responding) and non-thinking mode (instant response). Both operate within the same 2M token context window. It also has exclusive native integration with X (Twitter) data, enabling real-time social media analysis that no other model can replicate.
Grok 4.1 Pricing
Via the xAI API: $3.00 per million input tokens and $15.00 per million output tokens — comparable to Claude Sonnet 4.6 pricing. Consumer access is through SuperGrok at $30/month or X Premium+ at $40/month. Enterprise teams use Grok Business at $30/seat/month. The API follows OpenAI-compatible format, meaning most LLM frameworks work with minimal configuration changes.
Grok 4.1 vs Claude vs GPT-5
Grok 4.1's 2M context window is its primary advantage over GPT-5 (400K) and Claude Sonnet 4.5 (200K). On coding and reasoning benchmarks, it's competitive with Claude Sonnet 4.5 but falls slightly behind Claude Opus 4.6. Its X data integration is a unique capability for social media applications. The main drawbacks are xAI's smaller developer ecosystem and less predictable API uptime compared to OpenAI and Anthropic.
Frequently Asked Questions
Can Grok 4.1 access the internet?
Yes. Grok 4.1 has built-in web search capability and native access to X platform data. Web search is billed separately as a per-call fee on top of token costs.
Is Grok 4.1 available without an X subscription?
Yes. You can access Grok through xAI's API directly or via grok.com with a free tier offering limited daily messages. An X subscription is not required for API access.