💰 Unit Cost Winner GPT-4o Mini $0.15/1M in · $0.60/1M out
⚡ Latency & Speed Winner GPT-4o Mini 220ms TTFT · 140 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-4o Mini or GPT-6.1 Sol?

GPT-4o Mini is 92.5% cheaper for input tokens ($0.15 vs. $2.00 per 1M tokens) and $0.60 vs. $10.00 for output tokens (13.3x cost advantage). In terms of operational performance, GPT-4o Mini delivers lower response latency at 220ms TTFT (300ms faster than GPT-6.1 Sol) with 140 vs. 135 tok/s throughput. GPT-6.1 Sol leads coding evaluations at 86.4% SWE-bench Verified vs. 41.0% for GPT-4o Mini and 92.4% vs. 40.2% 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-4o Mini GPT-6.1 Sol Net Delta / Advantage
Input Cost / 1M Tokens $0.15 $2.00 GPT-4o Mini is 13.3x cheaper
Output Cost / 1M Tokens $0.60 $10.00 GPT-4o Mini (94.0% lower)
Prompt Cache Read / 1M $0.075 $0.100 GPT-4o Mini is 1.3x cheaper
Prompt Cache Write / 1M $0.15 $2.00 GPT-4o Mini is 13.3x cheaper
Context Window (Max Output) 131k (16k out) 1,075k (128k out) GPT-6.1 Sol (8.2x larger context)
Avg TTFT Response Latency 220ms 520ms GPT-4o Mini (300ms faster)
Generation Speed (Throughput) 140 tok/s 135 tok/s GPT-4o Mini (+5 tok/s faster)
SWE-bench Verified (Coding) 41% 86.4% GPT-6.1 Sol (+45.4% lead)
GPQA Diamond (PhD STEM) 40.2% 92.4% GPT-6.1 Sol (+52.2% lead)
MMLU-Pro (Multi-Discipline) 68% 91% GPT-6.1 Sol (+23.0% lead)
MATH-500 (Quantitative Logic) 70.2% 98.8% GPT-6.1 Sol (+28.6% lead)
Inference Value Score (IVR) 67.2 / 100 62.9 / 100 GPT-4o Mini (+4.3 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-4o Mini $5.81

$0.15/1M in · $0.60/1M out

Prompt Cache: $0.075/1M read · $0.15/1M write

GPT-6.1 Sol $76.25

$2.00/1M in · $10.00/1M out

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

Projected Monthly Cost Reduction
$70.44 / mo
(92.4% lower cost with GPT-4o Mini)
Open Full Matchup Analysis →
A

When to Choose GPT-4o Mini

Choose GPT-4o Mini (OpenAI) for high-volume classification, lightweight RAG chatbots, and structured JSON extraction — offering a 131k context window, 220ms TTFT, and $0.15/1M input pricing ($0.075/1M cached reads).

B

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).

Related Questions & Decision Factors

Which is cheaper: GPT-4o Mini or GPT-6.1 Sol?

GPT-4o Mini is cheaper at $0.15/1M input tokens ($0.60/1M output) compared to $2.00/1M input ($10.00/1M output) for GPT-6.1 Sol.

Which model has lower TTFT latency and higher tok/s throughput: GPT-4o Mini or GPT-6.1 Sol?

GPT-4o Mini delivers faster first-token latency at 220ms TTFT (140 tok/s throughput) compared to 520ms TTFT (135 tok/s) for GPT-6.1 Sol.

How do GPT-4o Mini and GPT-6.1 Sol compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, GPT-4o Mini scores 41% versus 86.4% for GPT-6.1 Sol. On GPQA Diamond graduate-level STEM reasoning, GPT-4o Mini scores 40.2% versus 92.4% for GPT-6.1 Sol (and 70.2% vs 98.8% on MATH-500).

When should you choose GPT-4o Mini?

Choose GPT-4o Mini (OpenAI) for high-volume classification, lightweight RAG chatbots, and structured JSON extraction — offering a 131k context window, 220ms TTFT, and $0.15/1M input pricing ($0.075/1M cached reads).

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).

Explore High-Priority Related Model Matchups