GPT-5.4 Mini vs GPT-6.1 Sol: cost per task
GPT-5.4 Mini is cheaper on 14 of 14 tasks and about 2.1x cheaper on average (geometric mean). GPT-6.1 Sol has the higher LMArena Text score (1484 vs 1447).
| Task | GPT-5.4 Mini | GPT-6.1 Sol | Difference |
|---|---|---|---|
| Answer a chat question | 0.53¢ | 0.67¢ | 1.3x |
| Reply to a customer email | 0.06¢ | 0.18¢ | 2.9x |
| Write a 1,500-word blog post | 1.1¢ | 2.3¢ | 2.2x |
| Write 10 product descriptions | 0.48¢ | 1.2¢ | 2.6x |
| Translate 1,000 words | 0.73¢ | 1.6¢ | 2.2x |
| Proofread one page (500 words) | 0.39¢ | 0.81¢ | 2.0x |
| Summarize a 20-page PDF | 1.2¢ | 3.1¢ | 2.6x |
| Extract data from an invoice | 0.28¢ | 0.52¢ | 1.9x |
| Analyze a 200-row spreadsheet | 1.6¢ | 8.4¢ | 5.2x |
| Answer from 5 retrieved documents (RAG) | 0.43¢ | 1.2¢ | 2.8x |
| Classify 100 support tickets | 0.56¢ | 0.77¢ | 1.4x |
| Review 500 lines of code | 2.7¢ | 4.9¢ | 1.8x |
| Write a SQL query | 0.36¢ | 0.48¢ | 1.3x |
| Run a 50-step coding agent | 32¢ | 53¢ | 1.6x |
Specs and list prices
| GPT-5.4 Mini | GPT-6.1 Sol | |
|---|---|---|
| Input per 1M | $0.75 | $2.00 |
| Output per 1M | $4.50 | $10.00 |
| Cached input per 1M | $0.075 | $0.10 |
| Context | 400K | 1.05M |
| Providers | 5 | 8 |
| Reasoning | default | always |
| LMArena Text | 1447 | 1484 |
| Released | Mar 17, 2026 | Sep 29, 2026 |
FAQ
Is GPT-5.4 Mini or GPT-6.1 Sol cheaper?
GPT-5.4 Mini is cheaper on 14 of 14 tasks and about 2.1x cheaper on average (geometric mean). GPT-6.1 Sol has the higher LMArena Text score (1484 vs 1447).
How much does GPT-5.4 Mini cost compared to GPT-6.1 Sol per token?
GPT-5.4 Mini: $0.75 input and $4.50 output per 1M tokens. GPT-6.1 Sol: $2.00 input and $10.00 output. Token prices alone mislead - models use different numbers of tokens for the same task, which is what the task table shows.