💰 Unit Cost Winner DeepSeek V3 $0.14/1M in · $0.28/1M out
⚡ Latency & Speed Winner DeepSeek V3 410ms TTFT · 78 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: DeepSeek V3 or GPT-6.1 Sol?

DeepSeek V3 is 93.0% cheaper for input tokens ($0.14 vs. $2.00 per 1M tokens) and $0.28 vs. $10.00 for output tokens (14.3x cost advantage). In terms of operational performance, DeepSeek V3 delivers lower response latency at 410ms TTFT (110ms faster than GPT-6.1 Sol) with 78 vs. 135 tok/s throughput. GPT-6.1 Sol leads coding evaluations at 86.4% SWE-bench Verified vs. 42.0% for DeepSeek V3 and 92.4% vs. 59.1% 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 DeepSeek V3 GPT-6.1 Sol Net Delta / Advantage
Input Cost / 1M Tokens $0.14 $2.00 DeepSeek V3 is 14.3x cheaper
Output Cost / 1M Tokens $0.28 $10.00 DeepSeek V3 (97.2% lower)
Prompt Cache Read / 1M $0.014 $0.100 DeepSeek V3 is 7.1x cheaper
Prompt Cache Write / 1M $0.14 $2.00 DeepSeek V3 is 14.3x cheaper
Context Window (Max Output) 131k (8k out) 1,075k (128k out) GPT-6.1 Sol (8.2x larger context)
Avg TTFT Response Latency 410ms 520ms DeepSeek V3 (110ms faster)
Generation Speed (Throughput) 78 tok/s 135 tok/s GPT-6.1 Sol (+57 tok/s faster)
SWE-bench Verified (Coding) 42% 86.4% GPT-6.1 Sol (+44.4% lead)
GPQA Diamond (PhD STEM) 59.1% 92.4% GPT-6.1 Sol (+33.3% lead)
MMLU-Pro (Multi-Discipline) 75.9% 91% GPT-6.1 Sol (+15.1% lead)
MATH-500 (Quantitative Logic) 90.2% 98.8% GPT-6.1 Sol (+8.6% lead)
Inference Value Score (IVR) 75 / 100 62.9 / 100 DeepSeek V3 (+12.1 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

DeepSeek V3 $3.33

$0.14/1M in · $0.28/1M out

Prompt Cache: $0.014/1M read · $0.14/1M 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
$72.93 / mo
(95.6% lower cost with DeepSeek V3)
Open Full Matchup Analysis →
A

When to Choose DeepSeek V3

Choose DeepSeek V3 (DeepSeek) for cost-sensitive batch text processing, drafting, and open-weight self-hosted inference — offering a 131k context window, 410ms TTFT, and $0.14/1M input pricing ($0.014/1M 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: DeepSeek V3 or GPT-6.1 Sol?

DeepSeek V3 is cheaper at $0.14/1M input tokens ($0.28/1M 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: DeepSeek V3 or GPT-6.1 Sol?

DeepSeek V3 delivers faster first-token latency at 410ms TTFT (78 tok/s throughput) compared to 520ms TTFT (135 tok/s) for GPT-6.1 Sol.

How do DeepSeek V3 and GPT-6.1 Sol compare on SWE-bench coding and GPQA Diamond reasoning?

On SWE-bench Verified software engineering, DeepSeek V3 scores 42% versus 86.4% for GPT-6.1 Sol. On GPQA Diamond graduate-level STEM reasoning, DeepSeek V3 scores 59.1% versus 92.4% for GPT-6.1 Sol (and 90.2% vs 98.8% on MATH-500).

When should you choose DeepSeek V3?

Choose DeepSeek V3 (DeepSeek) for cost-sensitive batch text processing, drafting, and open-weight self-hosted inference — offering a 131k context window, 410ms TTFT, and $0.14/1M input pricing ($0.014/1M 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