Gemini 3.5 Flash Lite vs GPT-6.1 Sol: cost per task
Gemini 3.5 Flash Lite is cheaper on 13 of 14 tasks and about 2.0x cheaper on average (geometric mean). GPT-6.1 Sol has the higher LMArena Text score (1484 vs 1455).
| Task | Gemini 3.5 Flash Lite | GPT-6.1 Sol | Difference |
|---|---|---|---|
| Answer a chat question | 0.41¢ | 0.67¢ | 1.6x |
| Reply to a customer email | 0.15¢ | 0.18¢ | 1.2x |
| Write a 1,500-word blog post | 0.90¢ | 2.3¢ | 2.6x |
| Write 10 product descriptions | 0.74¢ | 1.2¢ | 1.7x |
| Translate 1,000 words | 1.2¢ | 1.6¢ | 1.4x |
| Proofread one page (500 words) | 0.30¢ | 0.81¢ | 2.7x |
| Summarize a 20-page PDF | 0.69¢ | 3.1¢ | 4.5x |
| Extract data from an invoice | 0.38¢ | 0.52¢ | 1.4x |
| Analyze a 200-row spreadsheet | 2.2¢ | 8.4¢ | 3.8x |
| Answer from 5 retrieved documents (RAG) | 0.65¢ | 1.2¢ | 1.8x |
| Classify 100 support tickets | 1.7¢ | 0.77¢ | 2.2x |
| Review 500 lines of code | 0.67¢ | 4.9¢ | 7.2x |
| Write a SQL query | 0.40¢ | 0.48¢ | 1.2x |
| Run a 50-step coding agent | 24¢ | 53¢ | 2.2x |
Specs and list prices
| Gemini 3.5 Flash Lite | GPT-6.1 Sol | |
|---|---|---|
| Input per 1M | $0.30 | $2.00 |
| Output per 1M | $2.50 | $10.00 |
| Cached input per 1M | $0.03 | $0.10 |
| Context | 1M | 1.05M |
| Providers | 8 | 8 |
| Reasoning | always | always |
| LMArena Text | 1455 | 1484 |
| Released | Jul 21, 2026 | Sep 29, 2026 |
FAQ
Is Gemini 3.5 Flash Lite or GPT-6.1 Sol cheaper?
Gemini 3.5 Flash Lite is cheaper on 13 of 14 tasks and about 2.0x cheaper on average (geometric mean). GPT-6.1 Sol has the higher LMArena Text score (1484 vs 1455).
How much does Gemini 3.5 Flash Lite cost compared to GPT-6.1 Sol per token?
Gemini 3.5 Flash Lite: $0.30 input and $2.50 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.