OpenAI o3-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 (330ms faster than OpenAI o3-mini) with 88 vs. 98 tok/s throughput. Grok 3 leads coding evaluations at 65.8% SWE-bench Verified vs. 49.3% for OpenAI o3-mini and 84.6% vs. 79.7% 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 o3-mini
Net Delta / Advantage
Input Cost / 1M Tokens
$3.00
$1.10
OpenAI o3-mini is 2.7x cheaper
Output Cost / 1M Tokens
$15.00
$4.40
OpenAI o3-mini (70.7% lower)
Prompt Cache Read / 1M
$0.750
$0.550
OpenAI o3-mini is 1.4x cheaper
Prompt Cache Write / 1M
$3.00
$1.10
OpenAI o3-mini is 2.7x cheaper
Context Window (Max Output)
134k (16k out)
205k (100k out)
OpenAI o3-mini (1.5x larger context)
Avg TTFT Response Latency
620ms
950ms
Grok 3 (330ms faster)
Generation Speed (Throughput)
88 tok/s
98 tok/s
OpenAI o3-mini (+10 tok/s faster)
SWE-bench Verified (Coding)
65.8%
49.3%
Grok 3 (+16.5% lead)
GPQA Diamond (PhD STEM)
84.6%
79.7%
Grok 3 (+4.9% lead)
MMLU-Pro (Multi-Discipline)
80%
83.2%
OpenAI o3-mini (+3.2% lead)
MATH-500 (Quantitative Logic)
89.8%
97.9%
OpenAI o3-mini (+8.1% lead)
Inference Value Score (IVR)
52.7 / 100
59.7 / 100
OpenAI o3-mini (+7 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).
Choose OpenAI o3-mini (OpenAI) for competitive math reasoning, automated unit test generation, and structured logic pipelines — offering a 204k context window, 950ms TTFT, and $1.10/1M input pricing ($0.550/1M cached reads).
OpenAI o3-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 o3-mini?
Grok 3 delivers faster first-token latency at 620ms TTFT (88 tok/s throughput) compared to 950ms TTFT (98 tok/s) for OpenAI o3-mini.
How do Grok 3 and OpenAI o3-mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Grok 3 scores 65.8% versus 49.3% for OpenAI o3-mini. On GPQA Diamond graduate-level STEM reasoning, Grok 3 scores 84.6% versus 79.7% for OpenAI o3-mini (and 89.8% vs 97.9% 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 o3-mini?
Choose OpenAI o3-mini (OpenAI) for competitive math reasoning, automated unit test generation, and structured logic pipelines — offering a 204k context window, 950ms TTFT, and $1.10/1M input pricing ($0.550/1M cached reads).
