o3 vs GPT-5.4
Pricing, context window, and benchmark comparison · Last updated April 2026
o3 is cheaper than GPT-5.4 at $2.00/1M/1M vs $2.50/1M/1M input tokens — a 1.3x cost difference. GPT-5.4 scores higher on quality benchmarks (ELO 1420). Choose o3 for cost-sensitive workloads; choose GPT-5.4 for maximum quality.
Which is cheaper: o3 or GPT-5.4?
o3 is the cheaper option at $2.00/1M per 1M input tokens, compared to $2.50/1M for GPT-5.4. That is a 1.3x cost difference on input tokens. Output pricing follows a similar pattern: o3 charges $8.00/1M/1M vs $15.00/1M/1M for GPT-5.4.
Which has better quality: o3 or GPT-5.4?
Based on LMSYS Chatbot Arena rankings, GPT-5.4 achieves a higher ELO score (1420 vs 1395), suggesting stronger performance on open-ended tasks. o3 excels at top-tier reasoning on math, science, and agentic tasks. GPT-5.4 is known for openai flagship — top-tier reasoning, coding, and multimodal.
Which should you choose: o3 or GPT-5.4?
- → Top-tier reasoning on math, science, and agentic tasks
- → 87% cheaper than original o1 at the same capability tier
- → 200K context window
- → OpenAI flagship — top-tier reasoning, coding, and multimodal
- → Native computer use and tool search
- → 272K standard context (expandable to 1M)
Frequently Asked Questions
Which is cheaper: o3 or GPT-5.4?
o3 is cheaper at $2.00/1M per 1M input tokens, making it 1.3x more affordable.
Which has better quality: o3 or GPT-5.4?
GPT-5.4 scores higher on the LMSYS Chatbot Arena with an ELO of 1420, suggesting better overall quality for most tasks.
Which has a larger context window: o3 or GPT-5.4?
GPT-5.4 has a larger context window at 272K tokens.
Should I choose o3 or GPT-5.4?
Choose o3 if cost is the priority. Choose GPT-5.4 if benchmark quality is most important. Consider your specific use case: o3 is best for reasoning and math, while GPT-5.4 excels at coding and reasoning.
Is o3 or GPT-5.4 open source?
o3 is proprietary. GPT-5.4 is proprietary.