💰 Unit Cost Winner GPT-6.1 Sol $2.00/1M in · $10.00/1M out
⚡ Latency & Speed Winner GPT-6.1 Sol 520ms TTFT · 135 tok/s
💻 Coding (SWE) Winner GPT-6.1 Sol 86.4% SWE-bench · 96.8% HumanEval
🧠 STEM Reasoning Winner GPT-6.1 Sol 92.4% GPQA · 98.8% MATH-500

Which model is better: GPT-6.1 Sol or Grok 3?

GPT-6.1 Sol is 33.3% cheaper for input tokens ($2.00 vs. $3.00 per 1M tokens) and $10.00 vs. $15.00 for output tokens (1.5x cost advantage). In terms of operational performance, GPT-6.1 Sol delivers lower response latency at 520ms TTFT (100ms faster than Grok 3) with 135 vs. 88 tok/s throughput. GPT-6.1 Sol leads coding evaluations at 86.4% SWE-bench Verified vs. 65.8% for Grok 3 and 92.4% vs. 84.6% on GPQA Diamond.
Verified daily via automated API latency tests and official documentation.

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-6.1 Sol Grok 3 Net Delta / Advantage
Input Cost / 1M Tokens $2.00 $3.00 GPT-6.1 Sol is 1.5x cheaper
Output Cost / 1M Tokens $10.00 $15.00 GPT-6.1 Sol (33.3% lower)
Prompt Cache Read / 1M $0.100 $0.750 GPT-6.1 Sol is 7.5x cheaper
Prompt Cache Write / 1M $2.00 $3.00 GPT-6.1 Sol is 1.5x cheaper
Context Window (Max Output) 1,075k (128k out) 134k (16k out) GPT-6.1 Sol (8.0x larger context)
Avg TTFT Response Latency 520ms 620ms GPT-6.1 Sol (100ms faster)
Generation Speed (Throughput) 135 tok/s 88 tok/s GPT-6.1 Sol (+47 tok/s faster)
SWE-bench Verified (Coding) 86.4% 65.8% GPT-6.1 Sol (+20.6% lead)
GPQA Diamond (PhD STEM) 92.4% 84.6% GPT-6.1 Sol (+7.8% lead)
MMLU-Pro (Multi-Discipline) 91% 80% GPT-6.1 Sol (+11.0% lead)
MATH-500 (Quantitative Logic) 98.8% 89.8% GPT-6.1 Sol (+9.0% lead)
Inference Value Score (IVR) 62.9 / 100 52.7 / 100 GPT-6.1 Sol (+10.2 pts)

Interactive Monthly Token Economics & ROI Forecaster

Model production workloads across prompt, completion, and cached context tokens, or switch models on the fly.

25.0M Tokens
500K 50M 250M 500M+
5.0M Tokens
100K 25M 75M 150M+
50% Cached
0% (Uncached) 25% 50% (Typical Agent) 95% Max

Estimated Monthly Spend

GPT-6.1 Sol $76.25

$2.00/1M in · $10.00/1M out

Prompt Cache: $0.100/1M read · $2.00/1M write

Grok 3 $121.88

$3.00/1M in · $15.00/1M out

Prompt Cache: $0.750/1M read · $3.00/1M write

Projected Monthly Cost Reduction
$45.63 / mo
(37.4% lower cost with GPT-6.1 Sol)
Open Full Matchup Analysis →
A

When to Choose GPT-6.1 Sol

Choose GPT-6.1 Sol (OpenAI) for delivers near-GPT-6 Astra frontier accuracy at one-fifth the token cost with a 95% cache read discount for high-efficiency agentic coding, computer use, and enterprise workflow automation — offering a 1,075k context window, 520ms TTFT, and $2.00/1M input pricing ($0.100/1M cached reads).

B

When to Choose Grok 3

Choose Grok 3 (xAI) for massive compute foundation model specialized in PhD-level science reasoning, real-time data analysis, and enterprise logic — offering a 134k context window, 620ms TTFT, and $3.00/1M input pricing ($0.750/1M cached reads).

Related Questions & Decision Factors

Which is cheaper: GPT-6.1 Sol or Grok 3?

GPT-6.1 Sol is cheaper at $2.00/1M input tokens ($10.00/1M output) compared to $3.00/1M input ($15.00/1M output) for Grok 3.

Which model has lower TTFT latency and higher tok/s throughput: GPT-6.1 Sol or Grok 3?

GPT-6.1 Sol delivers faster first-token latency at 520ms TTFT (135 tok/s throughput) compared to 620ms TTFT (88 tok/s) for Grok 3.

How do GPT-6.1 Sol and Grok 3 compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, GPT-6.1 Sol scores 86.4% versus 65.8% for Grok 3. On GPQA Diamond graduate-level STEM reasoning, GPT-6.1 Sol scores 92.4% versus 84.6% for Grok 3 (and 98.8% vs 89.8% on MATH-500).

When should you choose GPT-6.1 Sol?

Choose GPT-6.1 Sol (OpenAI) for delivers near-GPT-6 Astra frontier accuracy at one-fifth the token cost with a 95% cache read discount for high-efficiency agentic coding, computer use, and enterprise workflow automation — offering a 1,075k context window, 520ms TTFT, and $2.00/1M input pricing ($0.100/1M cached reads).

When should you choose Grok 3?

Choose Grok 3 (xAI) for massive compute foundation model specialized in PhD-level science reasoning, real-time data analysis, and enterprise logic — offering a 134k context window, 620ms TTFT, and $3.00/1M input pricing ($0.750/1M cached reads).

Explore High-Priority Related Model Matchups