DeepSeek V3.1 vs o3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o3 by OpenAI wins on 16 of 21 benchmarks against DeepSeek V3.1 by DeepSeek, which leads on 5. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, o3 scores 1380 on Chatbot Arena ELO compared to DeepSeek V3.1's 1340, while o3 scores 84.0% on MMLU-Pro compared to DeepSeek V3.1's 78.0%, while o3 scores 9.5 on MT-Bench compared to DeepSeek V3.1's 8.8, while o3 scores 49.4% on SimpleQA compared to DeepSeek V3.1's 24.9%, while o3 scores 86.0% on TruthfulQA compared to DeepSeek V3.1's 76.5%.
Coding: In coding, o3 scores 90.0% on HumanEval+ compared to DeepSeek V3.1's 84.0%, while o3 scores 69.1% on SWE-bench Verified compared to DeepSeek V3.1's 46.0%, while o3 scores 70.0% on LiveCodeBench compared to DeepSeek V3.1's 48.0%.
Math: In math, o3 scores 96.0% on MATH compared to DeepSeek V3.1's 82.0%, while o3 scores 98.5% on GSM8K compared to DeepSeek V3.1's 92.0%.
Reasoning: In reasoning, o3 scores 83.3% on GPQA Diamond compared to DeepSeek V3.1's 55.0%, while o3 scores 75.7% on ARC-AGI compared to DeepSeek V3.1's 35.0%, while o3 scores 95.8% on BBH compared to DeepSeek V3.1's 87.5%, while o3 scores 94.0% on Winogrande compared to DeepSeek V3.1's 87.5%.
Context: In context, o3 scores 200K on Context Length compared to DeepSeek V3.1's 164K.
Multimodal: In multimodal, o3 scores 86.8% on MathVista compared to DeepSeek V3.1's 68.4%.
Pricing Comparison
DeepSeek V3.1 costs $0.25/1M input tokens and $0.95/1M output tokens, while o3 costs $2.0/1M input and $8.0/1M output. DeepSeek V3.1 is the more affordable option for API usage.
Speed Comparison
DeepSeek V3.1 generates output at 65 tok/s compared to o3's 40 tok/s, and the time to first token is 450 ms for DeepSeek V3.1 versus 800 ms for o3. DeepSeek V3.1 delivers faster throughput.
Verdict
For developers prioritizing affordability and speed, DeepSeek V3.1 has the edge. For those who value coding and general intelligence and math, o3 is the stronger choice.
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DeepSeek V3.1 vs o3 — FAQ
Which is better, DeepSeek V3.1 or o3?
o3 wins on more benchmarks overall (16 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does DeepSeek V3.1 compare to o3 for coding?
o3 is better for coding, scoring 69.1% on SWE-bench Verified compared to 46.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is DeepSeek V3.1 cheaper than o3?
Yes, DeepSeek V3.1 is cheaper. DeepSeek V3.1 costs $0.25/1M input and $0.95/1M output tokens. o3 costs $2.0/1M input and $8.0/1M output tokens.
Which is faster, DeepSeek V3.1 or o3?
DeepSeek V3.1 is faster, generating output at 65 tok/s compared to 40 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the DeepSeek V3.1 vs o3 comparison cover?
This comparison covers 21 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MT-Bench, SimpleQA, MATH, TruthfulQA, GPQA Diamond, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.