Llama 3.1 8B vs Grok 4 Fast Reasoning >128k
Side-by-side comparison of pricing and capabilities
Llama 3.1 8B
Grok 4 Fast Reasoning >128k
Input Price Comparison
| Attribute | Llama 3.1 8B | Grok 4 Fast Reasoning >128k |
|---|---|---|
| Provider | Meta | xAI |
| Input Price | $0.05 /1M tokens | $0.4 /1M tokens |
| Output Price | $0.08 /1M tokens | $1 /1M tokens |
| Cached Input | $0.0050 /1M tokens | $0.050 /1M tokens |
| Context Window | 128K | 1.0M |
| Type | chat | reasoning |
| Status | current | current |
Capability Comparison
| Capability | Llama 3.1 8B | Grok 4 Fast Reasoning >128k |
|---|---|---|
| multilingual | ||
| reasoning |
Which should you choose?
Budget-conscious: Llama 3.1 8B is 88% cheaper on input tokens ($0.05 vs $0.4 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: Llama 3.1 8B supports 1 capabilities (multilingual), while Grok 4 Fast Reasoning >128k supports 1 (reasoning).
Frequently Asked Questions
Which is cheaper: Llama 3.1 8B or Grok 4 Fast Reasoning >128k?
Llama 3.1 8B costs $0.05/1M input vs Grok 4 Fast Reasoning >128k at $0.4/1M input. Llama 3.1 8B is 88% cheaper on input tokens.
How do output prices compare between Llama 3.1 8B and Grok 4 Fast Reasoning >128k?
Llama 3.1 8B output: $0.08/1M, Grok 4 Fast Reasoning >128k output: $1/1M. Llama 3.1 8B is more economical for generation-heavy workloads.
What is Llama 3.1 8B best used for?
Llama 3.1 8B 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.