GPT-5.4 mini
GPT-5.4 mini is OpenAI's lower-cost, lower-latency variant for high-volume product workloads where you don't need flagship-level reasoning.
OpenAI · ChatGPT
GPT-5.4 mini
Smaller, faster, cheaper ChatGPT
GPT-5.4 mini is OpenAI's lower-cost, lower-latency variant for high-volume product workloads where you don't need flagship-level reasoning.
Key features
GPT-5.4 mini · AI Models
Context window
256K tokens
Max output
64K tokens
Released
March 2026
Pricing
Most affordable GPT-5.4 tier
Key features
- Significantly lower cost per token vs GPT-5.4 / GPT-5.5.
- Faster response times for chat, classification and routing.
- Strong instruction-following and tool-use for simple agents.
- Same safety stack as the full GPT-5.4 lineup.
Best for
Use GPT-5.4 mini for chatbots, classification, routing, summarisation and any high-throughput workload where unit cost and latency matter.
Frequently Asked Questions
How does GPT-5.4 mini compare to GPT-5.5?
GPT-5.4 mini is much cheaper and faster but less capable on reasoning-heavy tasks. Use GPT-5.5 for hard problems and mini for high-volume work.
Open Chat
GPT-5.4 mini is OpenAI's lower-cost, lower-latency variant for high-volume product workloads where you don't need flagship-level reasoning.