Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window.
Reasoning can be enabled/disabled using the reasoning enabled parameter in the API.
Back to Models
24.3%$0.2-0.4$0.04-0.08/ M tokens$0.5-1$0.1-0.2/ M tokensRead:0.050.01/ M tokensWrite:-/ M tokens2M--
Providers
Route requests across multiple providers. Copy a provider slug to set your preference.
ProviderCache Hit RateContext
xAISunset
x-ai
Uptime
24hoursDirect request success rate on AI Gateway and per-provider.
May 16, 20:29
xAI100.00%
Throughput
24hoursP50 throughput on live AI Gateway traffic, in tokens per second (TPS).
No data
Latency
24hoursP50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds.
No latency samples available for this period.
Activity
Token volume and request traffic to this model over time.
Token Consumption
May 16
xAI61.3M
Token volume broken down by the provider that served each request. Larger segments indicate providers handling more of this model's traffic.
Benchmarks
Scores on standardized evaluations. Higher percentages are better — and rank percentile shows
Metrics sourced fromArtificial Analysis
Artificial Analysis
Apps
Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for. View All
Token Ranking
No app usage is available for this period.
Related Models
More models from xAI