Grok 3 Mini is 88.0% cheaper for input tokens ($0.30 vs. $2.50 per 1M tokens) and $1.20 vs. $10.00 for output tokens (8.3x cost advantage). In terms of operational performance, Grok 3 Mini delivers lower response latency at 150ms TTFT (130ms faster than GPT-4o) with 160 vs. 100 tok/s throughput. Grok 3 Mini leads coding evaluations at 54.0% SWE-bench Verified vs. 48.0% for GPT-4o and 68.0% vs. 53.6% 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
Grok 3 Mini
Net Delta / Advantage
Input Cost / 1M Tokens
$2.50
$0.30
Grok 3 Mini is 8.3x cheaper
Output Cost / 1M Tokens
$10.00
$1.20
Grok 3 Mini (88.0% lower)
Prompt Cache Read / 1M
$1.250
$0.080
Grok 3 Mini is 15.6x cheaper
Prompt Cache Write / 1M
$2.50
$0.30
Grok 3 Mini is 8.3x cheaper
Context Window (Max Output)
131k (16k out)
131k (16k out)
Equal Context Window
Avg TTFT Response Latency
280ms
150ms
Grok 3 Mini (130ms faster)
Generation Speed (Throughput)
100 tok/s
160 tok/s
Grok 3 Mini (+60 tok/s faster)
SWE-bench Verified (Coding)
48%
54%
Grok 3 Mini (+6.0% lead)
GPQA Diamond (PhD STEM)
53.6%
68%
Grok 3 Mini (+14.4% lead)
MMLU-Pro (Multi-Discipline)
75.9%
80%
Grok 3 Mini (+4.1% lead)
MATH-500 (Quantitative Logic)
76.6%
87%
Grok 3 Mini (+10.4% lead)
Inference Value Score (IVR)
47.6 / 100
69.2 / 100
Grok 3 Mini (+21.6 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).
Grok 3 Mini is cheaper at $0.30/1M input tokens ($1.20/1M output) compared to $2.50/1M input ($10.00/1M output) for GPT-4o.
Which model has lower TTFT latency and higher tok/s throughput: GPT-4o or Grok 3 Mini?
Grok 3 Mini delivers faster first-token latency at 150ms TTFT (160 tok/s throughput) compared to 280ms TTFT (100 tok/s) for GPT-4o.
How do GPT-4o and Grok 3 Mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-4o scores 48% versus 54% for Grok 3 Mini. On GPQA Diamond graduate-level STEM reasoning, GPT-4o scores 53.6% versus 68% for Grok 3 Mini (and 76.6% vs 87% on MATH-500).
When should you choose GPT-4o?
Choose GPT-4o (OpenAI) for general enterprise assistants, multimodal customer support, and structured JSON output pipelines — offering a 131k context window, 280ms TTFT, and $2.50/1M input pricing ($1.250/1M 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).
