GPT-6 Astra vs Mistral Large 4: cost per task
Mistral Large 4 is cheaper on 14 of 14 tasks and about 5.8x cheaper on average (geometric mean). GPT-6 Astra has the higher LMArena Text score (1477 vs 1432).
| Task | GPT-6 Astra | Mistral Large 4 | Difference |
|---|---|---|---|
| Answer a chat question | 3.4¢ | 0.29¢ | 11.6x |
| Reply to a customer email | 0.89¢ | 0.76¢ | 1.2x |
| Write a 1,500-word blog post | 11¢ | 1.6¢ | 7.1x |
| Write 10 product descriptions | 6.2¢ | 0.66¢ | 9.3x |
| Translate 1,000 words | 8.0¢ | 2.6¢ | 3.0x |
| Proofread one page (500 words) | 4.0¢ | 0.92¢ | 4.4x |
| Summarize a 20-page PDF | 16¢ | 1.4¢ | 11.4x |
| Extract data from an invoice | 2.6¢ | 0.58¢ | 4.5x |
| Analyze a 200-row spreadsheet | 42¢ | 2.6¢ | 16.5x |
| Answer from 5 retrieved documents (RAG) | 5.9¢ | 0.92¢ | 6.4x |
| Classify 100 support tickets | 3.9¢ | 1.6¢ | 2.4x |
| Review 500 lines of code | 24¢ | 2.2¢ | 11.0x |
| Write a SQL query | 2.4¢ | 0.67¢ | 3.6x |
| Run a 50-step coding agent | $3.72 | 52¢ | 7.1x |
Specs and list prices
| GPT-6 Astra | Mistral Large 4 | |
|---|---|---|
| Input per 1M | $10.00 | $0.68 |
| Output per 1M | $50.00 | $2.09 |
| Cached input per 1M | $1.00 | $0.07 |
| Context | 1.05M | 1M |
| Providers | 7 | 3 |
| Reasoning | always | default |
| LMArena Text | 1477 | 1432 |
| Released | Sep 4, 2026 | Oct 6, 2026 |
FAQ
Is GPT-6 Astra or Mistral Large 4 cheaper?
Mistral Large 4 is cheaper on 14 of 14 tasks and about 5.8x cheaper on average (geometric mean). GPT-6 Astra has the higher LMArena Text score (1477 vs 1432).
How much does GPT-6 Astra cost compared to Mistral Large 4 per token?
GPT-6 Astra: $10.00 input and $50.00 output per 1M tokens. Mistral Large 4: $0.68 input and $2.09 output. Token prices alone mislead - models use different numbers of tokens for the same task, which is what the task table shows.