DeepSeek V3.2 (Reasoner) vs GPT-5.4 nano
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 nano is cheaper than DeepSeek V3.2 (Reasoner) at $0.20/1M/1M vs $0.28/1M/1M input tokens — a 1.4x cost difference. DeepSeek V3.2 (Reasoner) scores higher on quality benchmarks (ELO 1385). Choose GPT-5.4 nano for cost-sensitive workloads; choose DeepSeek V3.2 (Reasoner) for maximum quality.
Which is cheaper: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $0.28/1M for DeepSeek V3.2 (Reasoner). That is a 1.4x cost difference on input tokens. Output pricing follows a similar pattern: DeepSeek V3.2 (Reasoner) charges $0.42/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, DeepSeek V3.2 (Reasoner) achieves a higher ELO score (1385 vs 1280), suggesting stronger performance on open-ended tasks. DeepSeek V3.2 (Reasoner) excels at o-series-class reasoning at a fraction of the price. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
- → o-series-class reasoning at a fraction of the price
- → Up to 64K output tokens for long chain-of-thought
- → Open weights
- → Cheapest OpenAI model — $0.20/1M input
- → Good at classification, routing, and extraction
- → 272K context window even at low price
Frequently Asked Questions
Which is cheaper: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 1.4x more affordable.
Which has better quality: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
DeepSeek V3.2 (Reasoner) scores higher on the LMSYS Chatbot Arena with an ELO of 1385, suggesting better overall quality for most tasks.
Which has a larger context window: DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
GPT-5.4 nano has a larger context window at 272K tokens.
Should I choose DeepSeek V3.2 (Reasoner) or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose DeepSeek V3.2 (Reasoner) if benchmark quality is most important. Consider your specific use case: DeepSeek V3.2 (Reasoner) is best for reasoning and math, while GPT-5.4 nano excels at low-cost and fast-response.
Is DeepSeek V3.2 (Reasoner) or GPT-5.4 nano open source?
DeepSeek V3.2 (Reasoner) is open source. GPT-5.4 nano is proprietary.