Which model is better: GPT-6 Astra or Grok 3 Mini?
Grok 3 Mini is 97.0% cheaper for input tokens ($0.30 vs. $10.00 per 1M tokens) and $1.20 vs. $50.00 for output tokens (33.3x cost advantage). In terms of operational performance, Grok 3 Mini delivers lower response latency at 150ms TTFT (590ms faster than GPT-6 Astra) with 160 vs. 74 tok/s throughput. GPT-6 Astra leads coding evaluations at 75.7% SWE-bench Verified vs. 54.0% for Grok 3 Mini and 96.0% 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
GPT-6 Astra
Grok 3 Mini
Net Delta / Advantage
Input Cost / 1M Tokens
$10.00
$0.30
Grok 3 Mini is 33.3x cheaper
Output Cost / 1M Tokens
$50.00
$1.20
Grok 3 Mini (97.6% lower)
Prompt Cache Read / 1M
$1.000
$0.080
Grok 3 Mini is 12.5x cheaper
Prompt Cache Write / 1M
$12.50
$0.30
Grok 3 Mini is 41.7x cheaper
Context Window (Max Output)
1,075k (128k out)
131k (16k out)
GPT-6 Astra (8.2x larger context)
Avg TTFT Response Latency
740ms
150ms
Grok 3 Mini (590ms faster)
Generation Speed (Throughput)
74 tok/s
160 tok/s
Grok 3 Mini (+86 tok/s faster)
SWE-bench Verified (Coding)
75.7%
54%
GPT-6 Astra (+21.7% lead)
GPQA Diamond (PhD STEM)
96%
68%
GPT-6 Astra (+28.0% lead)
MMLU-Pro (Multi-Discipline)
91.2%
80%
GPT-6 Astra (+11.2% lead)
MATH-500 (Quantitative Logic)
98%
87%
GPT-6 Astra (+11.0% lead)
Inference Value Score (IVR)
47.6 / 100
69.2 / 100
Grok 3 Mini (+21.6 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 $10.00/1M input ($50.00/1M output) for GPT-6 Astra.
Which model has lower TTFT latency and higher tok/s throughput: GPT-6 Astra or Grok 3 Mini?
Grok 3 Mini delivers faster first-token latency at 150ms TTFT (160 tok/s throughput) compared to 740ms TTFT (74 tok/s) for GPT-6 Astra.
How do GPT-6 Astra and Grok 3 Mini compare on SWE-bench coding and GPQA Diamond reasoning?
On SWE-bench Verified software engineering, GPT-6 Astra scores 75.7% versus 54% for Grok 3 Mini. On GPQA Diamond graduate-level STEM reasoning, GPT-6 Astra scores 96% versus 68% for Grok 3 Mini (and 98% vs 87% on MATH-500).
When should you choose GPT-6 Astra?
Choose GPT-6 Astra (OpenAI) for high-autonomy flagship reasoning model engineered for end-to-end computer and browser use, advanced scientific research, and complex multi-turn software engineering — offering a 1,075k context window, 740ms TTFT, and $10.00/1M input pricing ($1.000/1M cached reads).
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).
