OpenAI o3-mini is 56.0% cheaper for input tokens ($1.10 vs. $2.50 per 1M tokens) and $4.40 vs. $12.50 for output tokens (2.3x cost advantage). In terms of operational performance, Grok 4 delivers lower response latency at 480ms TTFT (470ms faster than OpenAI o3-mini) with 95 vs. 98 tok/s throughput. Grok 4 leads coding evaluations at 73.2% SWE-bench Verified vs. 49.3% for OpenAI o3-mini and 86.2% 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 4
OpenAI o3-mini
Net Delta / Advantage
Input Cost / 1M Tokens
$2.50
$1.10
OpenAI o3-mini is 2.3x cheaper
Output Cost / 1M Tokens
$12.50
$4.40
OpenAI o3-mini (64.8% lower)
Prompt Cache Read / 1M
$0.500
$0.550
Grok 4 is 1.1x cheaper
Prompt Cache Write / 1M
$2.50
$1.10
OpenAI o3-mini is 2.3x cheaper
Context Window (Max Output)
262k (66k out)
205k (100k out)
Grok 4 (1.3x larger context)
Avg TTFT Response Latency
480ms
950ms
Grok 4 (470ms faster)
Generation Speed (Throughput)
95 tok/s
98 tok/s
OpenAI o3-mini (+3 tok/s faster)
SWE-bench Verified (Coding)
73.2%
49.3%
Grok 4 (+23.9% lead)
GPQA Diamond (PhD STEM)
86.2%
79.7%
Grok 4 (+6.5% lead)
MMLU-Pro (Multi-Discipline)
89.9%
83.2%
Grok 4 (+6.7% lead)
MATH-500 (Quantitative Logic)
97.6%
97.9%
OpenAI o3-mini (+0.3% lead)
Inference Value Score (IVR)
57.6 / 100
59.7 / 100
OpenAI o3-mini (+2.1 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
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 $2.50/1M input ($12.50/1M output) for Grok 4.
Which model has lower TTFT latency and higher tok/s throughput: Grok 4 or OpenAI o3-mini?
Grok 4 delivers faster first-token latency at 480ms TTFT (95 tok/s throughput) compared to 950ms TTFT (98 tok/s) for OpenAI o3-mini.
How do Grok 4 and OpenAI o3-mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Grok 4 scores 73.2% versus 49.3% for OpenAI o3-mini. On GPQA Diamond graduate-level STEM reasoning, Grok 4 scores 86.2% versus 79.7% for OpenAI o3-mini (and 97.6% vs 97.9% on MATH-500).
When should you choose Grok 4?
Choose Grok 4 (xAI) for real-time financial/market intelligence, PhD-level STEM problem solving, and autonomous code generation — offering a 262k context window, 480ms TTFT, and $2.50/1M input pricing ($0.500/1M 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).
