Grok 4 Fast >128k vs Kimi K2 0905 Preview
Side-by-side comparison of pricing and capabilities
Grok 4 Fast >128k
Kimi K2 0905 Preview
Input Price Comparison
| Attribute | Grok 4 Fast >128k | Kimi K2 0905 Preview |
|---|---|---|
| Provider | xAI | Moonshot AI |
| Input Price | $0.4 /1M tokens | $0.6 /1M tokens |
| Output Price | $1 /1M tokens | $2.5 /1M tokens |
| Cached Input | $0.050 /1M tokens | $0.150 /1M tokens |
| Context Window | 1.0M | 131K |
| Type | chat | chat |
| Status | current | preview |
Capability Comparison
| Capability | Grok 4 Fast >128k | Kimi K2 0905 Preview |
|---|---|---|
| coding | ||
| reasoning |
Which should you choose?
Budget-conscious: Grok 4 Fast >128k is 33% cheaper on input tokens ($0.4 vs $0.6 per 1M tokens).
Context-heavy tasks: Grok 4 Fast >128k offers a larger context window (1.0M vs 131K), making it better for long documents or conversations.
Capability fit: Grok 4 Fast >128k supports 1 capabilities (coding), while Kimi K2 0905 Preview supports 2 (reasoning, coding).
Frequently Asked Questions
Which is cheaper: Grok 4 Fast >128k or Kimi K2 0905 Preview?
Grok 4 Fast >128k costs $0.4/1M input vs Kimi K2 0905 Preview at $0.6/1M input. Grok 4 Fast >128k is 33% cheaper on input tokens.
How do output prices compare between Grok 4 Fast >128k and Kimi K2 0905 Preview?
Grok 4 Fast >128k output: $1/1M, Kimi K2 0905 Preview output: $2.5/1M. Grok 4 Fast >128k is more economical for generation-heavy workloads.
What is Grok 4 Fast >128k best used for?
Grok 4 Fast >128k is best for budget-conscious applications, high-volume chatbots, and tasks where cost efficiency is the primary concern.
What is Kimi K2 0905 Preview best used for?
Kimi K2 0905 Preview is suited for complex reasoning, analysis, and tasks that benefit from its reasoning and coding capabilities.