GPT-5.4 mini vs o4-mini
Pricing, context window, and benchmark comparison · Last updated April 2026
GPT-5.4 mini is cheaper than o4-mini at $0.75/1M/1M vs $1.10/1M/1M input tokens — a 1.5x cost difference. GPT-5.4 mini scores higher on quality benchmarks (ELO 1360). Choose GPT-5.4 mini for cost-sensitive workloads; both are strong choices depending on your budget.
Which is cheaper: GPT-5.4 mini or o4-mini?
GPT-5.4 mini is the cheaper option at $0.75/1M per 1M input tokens, compared to $1.10/1M for o4-mini. That is a 1.5x cost difference on input tokens. Output pricing follows a similar pattern: GPT-5.4 mini charges $4.50/1M/1M vs $4.40/1M/1M for o4-mini.
Which has better quality: GPT-5.4 mini or o4-mini?
Based on LMSYS Chatbot Arena rankings, GPT-5.4 mini achieves a higher ELO score (1360 vs 1350), suggesting stronger performance on open-ended tasks. GPT-5.4 mini excels at strong mid-tier quality close to gpt-5.4 at 1/3 the price. o4-mini is known for cheapest reasoning model in the openai lineup.
Which should you choose: GPT-5.4 mini or o4-mini?
- → Strong mid-tier quality close to GPT-5.4 at 1/3 the price
- → Fast inference and low latency
- → Same 272K context window as flagship
- → Cheapest reasoning model in the OpenAI lineup
- → Strong performance on code and math for the price
- → 200K context window
Frequently Asked Questions
Which is cheaper: GPT-5.4 mini or o4-mini?
GPT-5.4 mini is cheaper at $0.75/1M per 1M input tokens, making it 1.5x more affordable.
Which has better quality: GPT-5.4 mini or o4-mini?
GPT-5.4 mini scores higher on the LMSYS Chatbot Arena with an ELO of 1360, suggesting better overall quality for most tasks.
Which has a larger context window: GPT-5.4 mini or o4-mini?
GPT-5.4 mini has a larger context window at 272K tokens.
Should I choose GPT-5.4 mini or o4-mini?
Choose GPT-5.4 mini if cost is the priority. Choose GPT-5.4 mini if benchmark quality is most important. Consider your specific use case: GPT-5.4 mini is best for customer-support and data-extraction, while o4-mini excels at reasoning and coding.
Is GPT-5.4 mini or o4-mini open source?
GPT-5.4 mini is proprietary. o4-mini is proprietary.