Grok 4 is 83.3% cheaper for input tokens ($2.50 vs. $15.00 per 1M tokens) and $12.50 vs. $75.00 for output tokens (6.0x cost advantage). In terms of operational performance, Grok 4 delivers lower response latency at 480ms TTFT (440ms faster than Claude 4 Opus) with 95 vs. 46 tok/s throughput. Claude 4 Opus leads coding evaluations at 77.2% SWE-bench Verified vs. 73.2% for Grok 4 and 87.1% vs. 86.2% 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
Claude 4 Opus
Grok 4
Net Delta / Advantage
Input Cost / 1M Tokens
$15.00
$2.50
Grok 4 is 6.0x cheaper
Output Cost / 1M Tokens
$75.00
$12.50
Grok 4 (83.3% lower)
Prompt Cache Read / 1M
$1.500
$0.500
Grok 4 is 3.0x cheaper
Prompt Cache Write / 1M
$18.75
$2.50
Grok 4 is 7.5x cheaper
Context Window (Max Output)
205k (64k out)
262k (66k out)
Grok 4 (1.3x larger context)
Avg TTFT Response Latency
920ms
480ms
Grok 4 (440ms faster)
Generation Speed (Throughput)
46 tok/s
95 tok/s
Grok 4 (+49 tok/s faster)
SWE-bench Verified (Coding)
77.2%
73.2%
Claude 4 Opus (+4.0% lead)
GPQA Diamond (PhD STEM)
87.1%
86.2%
Claude 4 Opus (+0.9% lead)
MMLU-Pro (Multi-Discipline)
91.8%
89.9%
Claude 4 Opus (+1.9% lead)
MATH-500 (Quantitative Logic)
98.1%
97.6%
Claude 4 Opus (+0.5% lead)
Inference Value Score (IVR)
43.6 / 100
57.6 / 100
Grok 4 (+14 pts)
Interactive Monthly Token Economics & ROI Forecaster
Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.
Grok 4 is cheaper at $2.50/1M input tokens ($12.50/1M output) compared to $15.00/1M input ($75.00/1M output) for Claude 4 Opus.
Which model has lower TTFT latency and higher tok/s throughput: Claude 4 Opus or Grok 4?
Grok 4 delivers faster first-token latency at 480ms TTFT (95 tok/s throughput) compared to 920ms TTFT (46 tok/s) for Claude 4 Opus.
How do Claude 4 Opus and Grok 4 compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, Claude 4 Opus scores 77.2% versus 73.2% for Grok 4. On GPQA Diamond graduate-level STEM reasoning, Claude 4 Opus scores 87.1% versus 86.2% for Grok 4 (and 98.1% vs 97.6% on MATH-500).
When should you choose Claude 4 Opus?
Choose Claude 4 Opus (Anthropic) for mission-critical R&D, long-horizon autonomous coding tasks, complex theorem proving, and executive strategic synthesis — offering a 204k context window, 920ms TTFT, and $15.00/1M input pricing ($1.500/1M 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).
