Grok 3 Mini is 88.0% cheaper for input tokens ($0.30 vs. $2.50 per 1M tokens) and $1.20 vs. $12.50 for output tokens (8.3x cost advantage). In terms of operational performance, Grok 3 Mini delivers lower response latency at 150ms TTFT (330ms faster than Grok 4) with 160 vs. 95 tok/s throughput. Grok 4 leads coding evaluations at 73.2% SWE-bench Verified vs. 54.0% for Grok 3 Mini and 86.2% vs. 68.0% 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
Grok 4
Net Delta / Advantage
Input Cost / 1M Tokens
$0.30
$2.50
Grok 3 Mini is 8.3x cheaper
Output Cost / 1M Tokens
$1.20
$12.50
Grok 3 Mini (90.4% lower)
Prompt Cache Read / 1M
$0.080
$0.500
Grok 3 Mini is 6.3x cheaper
Prompt Cache Write / 1M
$0.30
$2.50
Grok 3 Mini is 8.3x cheaper
Context Window (Max Output)
131k (16k out)
262k (66k out)
Grok 4 (2.0x larger context)
Avg TTFT Response Latency
150ms
480ms
Grok 3 Mini (330ms faster)
Generation Speed (Throughput)
160 tok/s
95 tok/s
Grok 3 Mini (+65 tok/s faster)
SWE-bench Verified (Coding)
54%
73.2%
Grok 4 (+19.2% lead)
GPQA Diamond (PhD STEM)
68%
86.2%
Grok 4 (+18.2% lead)
MMLU-Pro (Multi-Discipline)
80%
89.9%
Grok 4 (+9.9% lead)
MATH-500 (Quantitative Logic)
87%
97.6%
Grok 4 (+10.6% lead)
Inference Value Score (IVR)
69.2 / 100
57.6 / 100
Grok 3 Mini (+11.6 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 ($12.50/1M output) for Grok 4.
Which model has lower TTFT latency and higher tok/s throughput: Grok 3 Mini or Grok 4?
Grok 3 Mini delivers faster first-token latency at 150ms TTFT (160 tok/s throughput) compared to 480ms TTFT (95 tok/s) for Grok 4.
How do Grok 3 Mini and Grok 4 compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Grok 3 Mini scores 54% versus 73.2% for Grok 4. On GPQA Diamond graduate-level STEM reasoning, Grok 3 Mini scores 68% versus 86.2% for Grok 4 (and 87% vs 97.6% 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 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).
