Grok 4 Fast Reasoning >128k vs DeepSeek Reasoner
Side-by-side comparison of pricing and capabilities
Grok 4 Fast Reasoning >128k
DeepSeek Reasoner
Input Price Comparison
| Attribute | Grok 4 Fast Reasoning >128k | DeepSeek Reasoner |
|---|---|---|
| Provider | xAI | DeepSeek |
| Input Price | $0.4 /1M tokens | $0.55 /1M tokens |
| Output Price | $1 /1M tokens | $2.19 /1M tokens |
| Cached Input | $0.050 /1M tokens | $0.055 /1M tokens |
| Context Window | 1.0M | 128K |
| Type | reasoning | reasoning |
| Status | current | current |
Capability Comparison
| Capability | Grok 4 Fast Reasoning >128k | DeepSeek Reasoner |
|---|---|---|
| reasoning | ||
| coding |
Which should you choose?
Budget-conscious: Grok 4 Fast Reasoning >128k is 27% cheaper on input tokens ($0.4 vs $0.55 per 1M tokens).
Context-heavy tasks: Grok 4 Fast Reasoning >128k offers a larger context window (1.0M vs 128K), making it better for long documents or conversations.
Capability fit: Grok 4 Fast Reasoning >128k supports 1 capabilities (reasoning), while DeepSeek Reasoner supports 2 (reasoning, coding).
Frequently Asked Questions
Which is cheaper: Grok 4 Fast Reasoning >128k or DeepSeek Reasoner?
Grok 4 Fast Reasoning >128k costs $0.4/1M input vs DeepSeek Reasoner at $0.55/1M input. Grok 4 Fast Reasoning >128k is 27% cheaper on input tokens.
How do output prices compare between Grok 4 Fast Reasoning >128k and DeepSeek Reasoner?
Grok 4 Fast Reasoning >128k output: $1/1M, DeepSeek Reasoner output: $2.19/1M. Grok 4 Fast Reasoning >128k is more economical for generation-heavy workloads.
What is Grok 4 Fast Reasoning >128k best used for?
Grok 4 Fast Reasoning >128k is best for budget-conscious applications, high-volume chatbots, and tasks where cost efficiency is the primary concern.
What is DeepSeek Reasoner best used for?
DeepSeek Reasoner is suited for complex reasoning, analysis, and tasks that benefit from its reasoning and coding capabilities.