💰 Unit Cost Winner OpenAI o4-mini $1.10/1M in · $4.40/1M 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 OpenAI o4-mini?

OpenAI o4-mini is 45.0% cheaper for input tokens ($1.10 vs. $2.00 per 1M tokens) and $4.40 vs. $10.00 for output tokens (1.8x cost advantage). In terms of operational performance, GPT-6.1 Sol delivers lower response latency at 520ms TTFT (160ms faster than OpenAI o4-mini) with 135 vs. 125 tok/s throughput. GPT-6.1 Sol leads coding evaluations at 86.4% SWE-bench Verified vs. 68.1% for OpenAI o4-mini and 92.4% vs. 81.4% 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 OpenAI o4-mini Net Delta / Advantage
Input Cost / 1M Tokens $2.00 $1.10 OpenAI o4-mini is 1.8x cheaper
Output Cost / 1M Tokens $10.00 $4.40 OpenAI o4-mini (56.0% lower)
Prompt Cache Read / 1M $0.100 $0.275 GPT-6.1 Sol is 2.8x cheaper
Prompt Cache Write / 1M $2.00 $1.10 OpenAI o4-mini is 1.8x cheaper
Context Window (Max Output) 1,075k (128k out) 205k (100k out) GPT-6.1 Sol (5.3x larger context)
Avg TTFT Response Latency 520ms 680ms GPT-6.1 Sol (160ms faster)
Generation Speed (Throughput) 135 tok/s 125 tok/s GPT-6.1 Sol (+10 tok/s faster)
SWE-bench Verified (Coding) 86.4% 68.1% GPT-6.1 Sol (+18.3% lead)
GPQA Diamond (PhD STEM) 92.4% 81.4% GPT-6.1 Sol (+11.0% lead)
MMLU-Pro (Multi-Discipline) 91% 85.6% GPT-6.1 Sol (+5.4% lead)
MATH-500 (Quantitative Logic) 98.8% 97.8% GPT-6.1 Sol (+1.0% lead)
Inference Value Score (IVR) 62.9 / 100 63.7 / 100 OpenAI o4-mini (+0.8 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

OpenAI o4-mini $39.19

$1.10/1M in · $4.40/1M out

Prompt Cache: $0.275/1M read · $1.10/1M write

Projected Monthly Cost Reduction
$37.06 / mo
(48.6% lower cost with OpenAI o4-mini)
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 OpenAI o4-mini

Choose OpenAI o4-mini (OpenAI) for automated PR review, high-volume agentic coding loops, SQL/data analysis, and visual document reasoning — offering a 204k context window, 680ms TTFT, and $1.10/1M input pricing ($0.275/1M cached reads).

Related Questions & Decision Factors

Which is cheaper: GPT-6.1 Sol or OpenAI o4-mini?

OpenAI o4-mini is cheaper at $1.10/1M input tokens ($4.40/1M 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-6.1 Sol or OpenAI o4-mini?

GPT-6.1 Sol delivers faster first-token latency at 520ms TTFT (135 tok/s throughput) compared to 680ms TTFT (125 tok/s) for OpenAI o4-mini.

How do GPT-6.1 Sol and OpenAI o4-mini compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, GPT-6.1 Sol scores 86.4% versus 68.1% for OpenAI o4-mini. On GPQA Diamond graduate-level STEM reasoning, GPT-6.1 Sol scores 92.4% versus 81.4% for OpenAI o4-mini (and 98.8% vs 97.8% 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 OpenAI o4-mini?

Choose OpenAI o4-mini (OpenAI) for automated PR review, high-volume agentic coding loops, SQL/data analysis, and visual document reasoning — offering a 204k context window, 680ms TTFT, and $1.10/1M input pricing ($0.275/1M cached reads).

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