Which model is better: GPT-4o Mini or Grok 3 Mini?
GPT-4o Mini is 50.0% cheaper for input tokens ($0.15 vs. $0.30 per 1M tokens) and $0.60 vs. $1.20 for output tokens (2.0x cost advantage). In terms of operational performance, Grok 3 Mini delivers lower response latency at 150ms TTFT (70ms faster than GPT-4o Mini) with 160 vs. 140 tok/s throughput. Grok 3 Mini leads coding evaluations at 54.0% SWE-bench Verified vs. 41.0% for GPT-4o Mini and 68.0% vs. 40.2% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.
Zero-Shot RAG Verified
Verified Performance & Unit Economics Delta (12 Dimensions)
Daily synchronized metrics across token pricing, prompt cache economics, latency, throughput, and 5 capability benchmarks.
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
Context Window (Max Output)
131k (16k out)
131k (16k out)
Equal Context Window
Avg TTFT Response Latency
220ms
150ms
Grok 3 Mini (70ms faster)
Generation Speed (Throughput)
140 tok/s
160 tok/s
Grok 3 Mini (+20 tok/s faster)
SWE-bench Verified (Coding)
41%
54%
Grok 3 Mini (+13.0% lead)
GPQA Diamond (PhD STEM)
40.2%
68%
Grok 3 Mini (+27.8% lead)
MMLU-Pro (Multi-Discipline)
68%
80%
Grok 3 Mini (+12.0% lead)
MATH-500 (Quantitative Logic)
70.2%
87%
Grok 3 Mini (+16.8% lead)
Inference Value Score (IVR)
67.2 / 100
69.2 / 100
Grok 3 Mini (+2 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
Choose Grok 3 Mini (xAI) for high-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing — offering a 131k context window, 150ms TTFT, and $0.30/1M input pricing ($0.080/1M cached reads).
GPT-4o Mini is cheaper at $0.15/1M input tokens ($0.60/1M output) compared to $0.30/1M input ($1.20/1M output) for Grok 3 Mini.
Which model has lower TTFT latency and higher tok/s throughput: GPT-4o Mini or Grok 3 Mini?
Grok 3 Mini delivers faster first-token latency at 150ms TTFT (160 tok/s throughput) compared to 220ms TTFT (140 tok/s) for GPT-4o Mini.
How do GPT-4o Mini and Grok 3 Mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-4o Mini scores 41% versus 54% for Grok 3 Mini. On GPQA Diamond graduate-level STEM reasoning, GPT-4o Mini scores 40.2% versus 68% for Grok 3 Mini (and 70.2% vs 87% on MATH-500).
When should you choose GPT-4o Mini?
Choose GPT-4o Mini (OpenAI) for high-volume classification, lightweight RAG chatbots, and structured JSON extraction — offering a 131k context window, 220ms TTFT, and $0.15/1M input pricing ($0.075/1M cached reads).
When should you choose Grok 3 Mini?
Choose Grok 3 Mini (xAI) for high-speed reasoning model providing rapid answers and code generation with chain-of-thought capabilities at edge pricing — offering a 131k context window, 150ms TTFT, and $0.30/1M input pricing ($0.080/1M cached reads).
