o3 vs GPT-5.4 nano
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 nano is cheaper than o3 at $0.20/1M/1M vs $2.00/1M/1M input tokens — a 10.0x cost difference. o3 scores higher on quality benchmarks (ELO 1395). Choose GPT-5.4 nano for cost-sensitive workloads; choose o3 for maximum quality.
Which is cheaper: o3 or GPT-5.4 nano?
GPT-5.4 nano is the cheaper option at $0.20/1M per 1M input tokens, compared to $2.00/1M for o3. That is a 10.0x cost difference on input tokens. Output pricing follows a similar pattern: o3 charges $8.00/1M/1M vs $1.25/1M/1M for GPT-5.4 nano.
Which has better quality: o3 or GPT-5.4 nano?
Based on LMSYS Chatbot Arena rankings, o3 achieves a higher ELO score (1395 vs 1280), suggesting stronger performance on open-ended tasks. o3 excels at top-tier reasoning on math, science, and agentic tasks. GPT-5.4 nano is known for cheapest openai model — $0.20/1m input.
Which should you choose: o3 or GPT-5.4 nano?
- → Top-tier reasoning on math, science, and agentic tasks
- → 87% cheaper than original o1 at the same capability tier
- → 200K context window
- → 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: o3 or GPT-5.4 nano?
GPT-5.4 nano is cheaper at $0.20/1M per 1M input tokens, making it 10.0x more affordable.
Which has better quality: o3 or GPT-5.4 nano?
o3 scores higher on the LMSYS Chatbot Arena with an ELO of 1395, suggesting better overall quality for most tasks.
Which has a larger context window: o3 or GPT-5.4 nano?
GPT-5.4 nano has a larger context window at 272K tokens.
Should I choose o3 or GPT-5.4 nano?
Choose GPT-5.4 nano if cost is the priority. Choose o3 if benchmark quality is most important. Consider your specific use case: o3 is best for reasoning and math, while GPT-5.4 nano excels at low-cost and fast-response.
Is o3 or GPT-5.4 nano open source?
o3 is proprietary. GPT-5.4 nano is proprietary.