Grok 4 Fast Reasoning ≤128k vs Llama 3.1 70B
Side-by-side comparison of pricing and capabilities
Grok 4 Fast Reasoning ≤128k
Llama 3.1 70B
Input Price Comparison
| Attribute | Grok 4 Fast Reasoning ≤128k | Llama 3.1 70B |
|---|---|---|
| Provider | xAI | Meta |
| Input Price | $0.2 /1M tokens | $0.23 /1M tokens |
| Output Price | $0.5 /1M tokens | $0.4 /1M tokens |
| Cached Input | $0.050 /1M tokens | $0.023 /1M tokens |
| Context Window | 131K | 128K |
| Type | reasoning | chat |
| Status | current | current |
Capability Comparison
| Capability | Grok 4 Fast Reasoning ≤128k | Llama 3.1 70B |
|---|---|---|
| reasoning | ||
| coding | ||
| multilingual |
Which should you choose?
Budget-conscious: Grok 4 Fast Reasoning ≤128k is 13% cheaper on input tokens ($0.2 vs $0.23 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: Grok 4 Fast Reasoning ≤128k supports 1 capabilities (reasoning), while Llama 3.1 70B supports 2 (coding, multilingual).
Frequently Asked Questions
Which is cheaper: Grok 4 Fast Reasoning ≤128k or Llama 3.1 70B?
Grok 4 Fast Reasoning ≤128k costs $0.2/1M input vs Llama 3.1 70B at $0.23/1M input. Grok 4 Fast Reasoning ≤128k is 13% cheaper on input tokens.
How do output prices compare between Grok 4 Fast Reasoning ≤128k and Llama 3.1 70B?
Grok 4 Fast Reasoning ≤128k output: $0.5/1M, Llama 3.1 70B output: $0.4/1M. Llama 3.1 70B 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 Llama 3.1 70B best used for?
Llama 3.1 70B is suited for complex reasoning, analysis, and tasks that benefit from its coding and multilingual capabilities.