GPT-4o Mini vs Grok 3 Mini
Live Unit Economics, TTFT Latency & Reasoning Benchmark Analysis
Which model is better: GPT-4o Mini or Grok 3 Mini?
Verified Performance & Unit Economics Delta
Daily synchronized metrics from synthetic latency endpoints and benchmark evaluations.
| Metric / Dimension | GPT-4o Mini | Grok 3 Mini | Net Delta / Advantage |
|---|---|---|---|
| Input Cost / 1M Tokens | $0.15 | $0.30 | GPT-4o Mini is 2.0x cheaper |
| Output Cost / 1M Tokens | $0.60 | $1.20 | GPT-4o Mini (50.0% lower) |
| Prompt Cache Read / 1M | $0.075 | $0.080 | GPT-4o Mini is 1.1x cheaper |
| Prompt Cache Write / 1M | $0.15 | $0.30 | GPT-4o Mini is 2.0x cheaper |
| Avg TTFT Response Latency | 220ms | 150ms | Grok 3 Mini (+70ms faster) |
| SWE-bench Verified (Coding) | 41% | 54% | Grok 3 Mini (+13.0% lead) |
| Inference Value Score (IVR) | 70.6 / 100 | 69.6 / 100 | GPT-4o Mini (+1 pts) |
Interactive Monthly Token Economics & ROI Forecaster
Model your expected production workload across prompt (input) and completion (output) tokens with prompt caching economics.
Estimated Monthly Spend
$0.15/1M in · $0.60/1M out
Prompt Cache: $0.075/1M read · $0.15/1M write
$0.30/1M in · $1.20/1M out
Prompt Cache: $0.080/1M read · $0.30/1M write
When to Choose GPT-4o Mini
Choose GPT-4o Mini when you need Ultra-affordable, low-latency multimodal model optimized for high-volume customer queries, fine-tuning, and structured JSON extraction. and have an infrastructure budget aligned with $0.15/1M tokens.
When to Choose Grok 3 Mini
Choose Grok 3 Mini when you need High-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing. and prioritize xAI ecosystem integration at $0.30/1M tokens.
Related Questions & Decision Factors
Which is cheaper: GPT-4o Mini or Grok 3 Mini?
GPT-4o Mini is cheaper at $0.15/1M input tokens compared to $0.30/1M for Grok 3 Mini.
Which model has lower latency: GPT-4o Mini or Grok 3 Mini?
Grok 3 Mini delivers faster response times with an average TTFT of 150ms vs 220ms for GPT-4o Mini.
When should you choose GPT-4o Mini?
Choose GPT-4o Mini when you need Ultra-affordable, low-latency multimodal model optimized for high-volume customer queries, fine-tuning, and structured JSON extraction. and have an infrastructure budget aligned with $0.15/1M tokens.
When should you choose Grok 3 Mini?
Choose Grok 3 Mini when you need High-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing. and prioritize xAI ecosystem integration at $0.30/1M tokens.