LLM Comparison

Grok 4 Fast vs Reka Edge

Side-by-side specs, pricing & capabilities · Updated April 2026

Add to comparison

2/6 models
Same tier:
 xAIGrok 4 Fast
R
Reka Edge
OrganizationxAIxAIReka
OpenTools Score
FamilyGrokReka
StatusCurrentCurrent
Release DateSep 2025Mar 2026
Context Window2.0M tokens16K tokens
Input Price$0.20/M tokens$0.10/M tokens
Output Price$0.50/M tokens$0.10/M tokens
Pricing NotesCache read: $0.0500/M tokens—
Capabilities
textvisioncode
textvisionvideocode
Max Output30K tokens16K tokens
API Identifierx-ai/grok-4-fastrekaai/reka-edge
 View Grok 4 FastView Reka Edge

Cost Calculator

Enter your expected monthly token usage to compare costs.

ModelInputOutputTotal / movs Best
Reka EdgeCheapest$0.10$0.05$0.15—
Grok 4 Fast$0.20$0.25$0.45+200%

xAI

Grok 4 Fast

Grok 4 Fast is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $0.20/M input tokens.

Reka

Reka Edge

Reka Edge is a multimodal llm from Reka. Supports up to 16,384 token context window. Available from $0.10/M input tokens.

More Comparisons

Flagship

Jamba Large 1.7 vs Command A

Flagship

Jamba Large 1.7 vs Inflection 3 Pi

Flagship

Jamba Large 1.7 vs Sonar Deep Research

Flagship

Jamba Large 1.7 vs Palmyra X5

Flagship

Command A vs Inflection 3 Pi

Flagship

Command A vs Sonar Deep Research

Looking for more AI models?

Browse All LLMs