GPT-5.4 mini vs MiniMax M3: cost

For a typical support chatbot, MiniMax M3 is about 3.3× cheaper than GPT-5.4 mini ($100 vs $332 per month). Price is only one factor: test both on your own prompts before switching.

GPT-5.4 mini vs MiniMax M3: prices and limits
GPT-5.4 miniMiniMax M3
Input /1M$0.75$0.30
Output /1M$4.50$1.20
Cached input /1M$0.075$0.06
Batch input /1M$0.375—
Batch output /1M$2.25—
Context window400,0001,000,000
Max input272,0001,000,000
Max output128,000128,000

Monthly cost by workload

Estimated monthly cost by workload (USD)
Scenario (per month)GPT-5.4 miniMiniMax M3
Customer support chatbot
5,000 req/day · 1,200 in · 400 out · cache 60%
$332$100
RAG over documents
2,000 req/day · 8,000 in · 600 out · cache 30%
$425$153
Coding agent
1,500 req/day · 25,000 in · 2,000 out · cache 80%
$641$230
Deep reasoning
800 req/day · 3,000 in · 6,000 out · cache 20%
$692$191
Batch processing
50,000 req/day · 1,500 in · 150 out · batch
$1,350$945