Model scorecard
xAI grok-5-fast
Composite 73.8/100 across quality, throughput, latency, price efficiency and usable context — measured through the gateway, not vendor-reported.
A73.8/100xai/grok-5-fasttext · 256k context
Capability
eval compositeQuality (blended eval)80
Category: cheap
Usable context13
256k advertised window
Serving
gateway measuredThroughput80
280 output tokens/s median
Time to first token87
80ms p50
Economics
at provider costPrice efficiency80
$0.50 per 1M output tokens
Quality per dollar100
llmcloud adds $0 to these token prices.
Suggested usage
Not a default pick today. It is a reasonable explicit choice when you need this vendor specifically, or as a failover target inside auto:cheap.
→ Full workload matrix