OpenAI: GPT-3.5 Turbo (older v0613) vs xAI: Grok 4.1 Fast
Head-to-head API cost, context, and performance comparison. Synced at 5:06:37 PM.
Executive Summary
When evaluating OpenAI: GPT-3.5 Turbo (older v0613) against xAI: Grok 4.1 Fast, the pricing structure is a key differentiator. xAI: Grok 4.1 Fast is approximately 77% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, xAI: Grok 4.1 Fast leads with a statistical ELO score of 1431. For tasks involving complex logic, coding, or instruction-following, developers might prefer xAI: Grok 4.1 Fast, provided their budget allows for the API burn rate.
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Raw Technical comparison
Verdict
If you are looking for pure performance and capability, Tie is statistically superior. However, if API burn rate is the primary concern, xAI: Grok 4.1 Fast wins out aggressively in pricing.
People Also Ask
Is OpenAI: GPT-3.5 Turbo (older v0613) cheaper than xAI: Grok 4.1 Fast?
No. xAI: Grok 4.1 Fast is the more cost-effective model, operating at a lower price point per 1 million tokens.
Which model has the larger context window?
The xAI: Grok 4.1 Fast model has the advantage in memory, offering a massive 2,000,000 token limit for document ingestion.