OpenAI o4-mini is 63.3% cheaper for input tokens ($1.10 vs. $3.00 per 1M tokens) and $4.40 vs. $15.00 for output tokens (2.7x cost advantage). In terms of operational performance, Grok 3 delivers lower response latency at 620ms TTFT (60ms faster than OpenAI o4-mini) with 88 vs. 125 tok/s throughput. OpenAI o4-mini leads coding evaluations at 68.1% SWE-bench Verified vs. 65.8% for Grok 3 and 81.4% vs. 84.6% 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
Grok 3
OpenAI o4-mini
Net Delta / Advantage
Input Cost / 1M Tokens
$3.00
$1.10
OpenAI o4-mini is 2.7x cheaper
Output Cost / 1M Tokens
$15.00
$4.40
OpenAI o4-mini (70.7% lower)
Prompt Cache Read / 1M
$0.750
$0.275
OpenAI o4-mini is 2.7x cheaper
Prompt Cache Write / 1M
$3.00
$1.10
OpenAI o4-mini is 2.7x cheaper
Context Window (Max Output)
134k (16k out)
205k (100k out)
OpenAI o4-mini (1.5x larger context)
Avg TTFT Response Latency
620ms
680ms
Grok 3 (60ms faster)
Generation Speed (Throughput)
88 tok/s
125 tok/s
OpenAI o4-mini (+37 tok/s faster)
SWE-bench Verified (Coding)
65.8%
68.1%
OpenAI o4-mini (+2.3% lead)
GPQA Diamond (PhD STEM)
84.6%
81.4%
Grok 3 (+3.2% lead)
MMLU-Pro (Multi-Discipline)
80%
85.6%
OpenAI o4-mini (+5.6% lead)
MATH-500 (Quantitative Logic)
89.8%
97.8%
OpenAI o4-mini (+8.0% lead)
Inference Value Score (IVR)
52.7 / 100
63.7 / 100
OpenAI o4-mini (+11 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 (xAI) for massive compute foundation model specialized in PhD-level science reasoning, real-time data analysis, and enterprise logic — offering a 134k context window, 620ms TTFT, and $3.00/1M input pricing ($0.750/1M cached reads).
OpenAI o4-mini is cheaper at $1.10/1M input tokens ($4.40/1M output) compared to $3.00/1M input ($15.00/1M output) for Grok 3.
Which model has lower TTFT latency and higher tok/s throughput: Grok 3 or OpenAI o4-mini?
Grok 3 delivers faster first-token latency at 620ms TTFT (88 tok/s throughput) compared to 680ms TTFT (125 tok/s) for OpenAI o4-mini.
How do Grok 3 and OpenAI o4-mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Grok 3 scores 65.8% versus 68.1% for OpenAI o4-mini. On GPQA Diamond graduate-level STEM reasoning, Grok 3 scores 84.6% versus 81.4% for OpenAI o4-mini (and 89.8% vs 97.8% on MATH-500).
When should you choose Grok 3?
Choose Grok 3 (xAI) for massive compute foundation model specialized in PhD-level science reasoning, real-time data analysis, and enterprise logic — offering a 134k context window, 620ms TTFT, and $3.00/1M input pricing ($0.750/1M cached reads).
When should you choose OpenAI o4-mini?
Choose OpenAI o4-mini (OpenAI) for automated PR review, high-volume agentic coding loops, SQL/data analysis, and visual document reasoning — offering a 204k context window, 680ms TTFT, and $1.10/1M input pricing ($0.275/1M cached reads).
