GPT-6.1 Sol vs GPT-5.4 mini: cost

For a typical support chatbot, GPT-5.4 mini is about 2.3× cheaper than GPT-6.1 Sol ($332 vs $759 per month). Price is only one factor: test both on your own prompts before switching.

GPT-6.1 Sol vs GPT-5.4 mini: prices and limits
GPT-6.1 SolGPT-5.4 mini
Input /1M$2.00$0.75
Output /1M$10.00$4.50
Cached input /1M$0.10$0.075
Batch input /1M$1.00$0.375
Batch output /1M$5.00$2.25
Context window1,050,000400,000
Max input922,000272,000
Max output128,000128,000

Monthly cost by workload

Estimated monthly cost by workload (USD)
Scenario (per month)GPT-6.1 SolGPT-5.4 mini
Customer support chatbot
5,000 req/day · 1,200 in · 400 out · cache 60%
$759$332
RAG over documents
2,000 req/day · 8,000 in · 600 out · cache 30%
$1,058$425
Coding agent
1,500 req/day · 25,000 in · 2,000 out · cache 80%
$1,496$641
Deep reasoning
800 req/day · 3,000 in · 6,000 out · cache 20%
$1,557$692
Batch processing
50,000 req/day · 1,500 in · 150 out · batch
$3,375$1,350