DeepSeek-V4-Flash vs Grok 4 Fast Reasoning ≤128k
Side-by-side comparison of pricing and capabilities
DeepSeek-V4-Flash
Grok 4 Fast Reasoning ≤128k
Input Price Comparison
| Attribute | DeepSeek-V4-Flash | Grok 4 Fast Reasoning ≤128k |
|---|---|---|
| Provider | DeepSeek | xAI |
| Input Price | $0.14 /1M tokens | $0.2 /1M tokens |
| Output Price | $0.28 /1M tokens | $0.5 /1M tokens |
| Cached Input | $0.028 /1M tokens | $0.050 /1M tokens |
| Context Window | 128K | 131K |
| Type | chat | reasoning |
| Status | current | current |
Capability Comparison
| Capability | DeepSeek-V4-Flash | Grok 4 Fast Reasoning ≤128k |
|---|---|---|
| coding | ||
| reasoning | ||
| multilingual |
Which should you choose?
Budget-conscious: DeepSeek-V4-Flash is 30% cheaper on input tokens ($0.14 vs $0.2 per 1M tokens).
Context-heavy tasks: Grok 4 Fast Reasoning ≤128k offers a larger context window (131K vs 128K), making it better for long documents or conversations.
Capability fit: DeepSeek-V4-Flash supports 3 capabilities (coding, reasoning, multilingual), while Grok 4 Fast Reasoning ≤128k supports 1 (reasoning).
Frequently Asked Questions
Which is cheaper: DeepSeek-V4-Flash or Grok 4 Fast Reasoning ≤128k?
DeepSeek-V4-Flash costs $0.14/1M input vs Grok 4 Fast Reasoning ≤128k at $0.2/1M input. DeepSeek-V4-Flash is 30% cheaper on input tokens.
How do output prices compare between DeepSeek-V4-Flash and Grok 4 Fast Reasoning ≤128k?
DeepSeek-V4-Flash output: $0.28/1M, Grok 4 Fast Reasoning ≤128k output: $0.5/1M. DeepSeek-V4-Flash is more economical for generation-heavy workloads.
What is DeepSeek-V4-Flash best used for?
DeepSeek-V4-Flash is best for budget-conscious applications, high-volume chatbots, and tasks where cost efficiency is the primary concern.
What is Grok 4 Fast Reasoning ≤128k best used for?
Grok 4 Fast Reasoning ≤128k is suited for complex reasoning, analysis, and tasks that benefit from its reasoning capabilities.