Which model is better: Grok 3 Mini or OpenAI o3-mini?
Grok 3 Mini is 72.7% cheaper for input tokens ($0.30 vs. $1.10 per 1M tokens) and $1.20 vs. $4.40 for output tokens (3.7x cost advantage). In terms of operational performance, Grok 3 Mini delivers lower response latency at 150ms TTFT (800ms faster than OpenAI o3-mini) with 160 vs. 98 tok/s throughput. Grok 3 Mini leads coding evaluations at 54.0% SWE-bench Verified vs. 49.3% for OpenAI o3-mini and 68.0% 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 Mini
OpenAI o3-mini
Net Delta / Advantage
Input Cost / 1M Tokens
$0.30
$1.10
Grok 3 Mini is 3.7x cheaper
Output Cost / 1M Tokens
$1.20
$4.40
Grok 3 Mini (72.7% lower)
Prompt Cache Read / 1M
$0.080
$0.550
Grok 3 Mini is 6.9x cheaper
Prompt Cache Write / 1M
$0.30
$1.10
Grok 3 Mini is 3.7x cheaper
Context Window (Max Output)
131k (16k out)
205k (100k out)
OpenAI o3-mini (1.6x larger context)
Avg TTFT Response Latency
150ms
950ms
Grok 3 Mini (800ms faster)
Generation Speed (Throughput)
160 tok/s
98 tok/s
Grok 3 Mini (+62 tok/s faster)
SWE-bench Verified (Coding)
54%
49.3%
Grok 3 Mini (+4.7% lead)
GPQA Diamond (PhD STEM)
68%
79.7%
OpenAI o3-mini (+11.7% lead)
MMLU-Pro (Multi-Discipline)
80%
83.2%
OpenAI o3-mini (+3.2% lead)
MATH-500 (Quantitative Logic)
87%
97.9%
OpenAI o3-mini (+10.9% lead)
Inference Value Score (IVR)
69.2 / 100
59.7 / 100
Grok 3 Mini (+9.5 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).
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).
Grok 3 Mini is cheaper at $0.30/1M input tokens ($1.20/1M output) compared to $1.10/1M input ($4.40/1M output) for OpenAI o3-mini.
Which model has lower TTFT latency and higher tok/s throughput: Grok 3 Mini or OpenAI o3-mini?
Grok 3 Mini delivers faster first-token latency at 150ms TTFT (160 tok/s throughput) compared to 950ms TTFT (98 tok/s) for OpenAI o3-mini.
How do Grok 3 Mini and OpenAI o3-mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Grok 3 Mini scores 54% versus 49.3% for OpenAI o3-mini. On GPQA Diamond graduate-level STEM reasoning, Grok 3 Mini scores 68% versus 79.7% for OpenAI o3-mini (and 87% vs 97.9% on MATH-500).
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).
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).
