GPT-6 Astra vs Grok 4.7: cost per task
Grok 4.7 is cheaper on 14 of 14 tasks and about 2.7x cheaper on average (geometric mean). GPT-6 Astra has the higher LMArena Text score (1477 vs 1444).
| Task | GPT-6 Astra | Grok 4.7 | Difference |
|---|---|---|---|
| Answer a chat question | 3.4¢ | 0.96¢ | 3.5x |
| Reply to a customer email | 0.89¢ | 0.50¢ | 1.8x |
| Write a 1,500-word blog post | 11¢ | 2.3¢ | 5.1x |
| Write 10 product descriptions | 6.2¢ | 0.89¢ | 6.9x |
| Translate 1,000 words | 8.0¢ | 2.9¢ | 2.8x |
| Proofread one page (500 words) | 4.0¢ | 1.3¢ | 3.2x |
| Summarize a 20-page PDF | 16¢ | 3.4¢ | 4.5x |
| Extract data from an invoice | 2.6¢ | 1.1¢ | 2.3x |
| Analyze a 200-row spreadsheet | 42¢ | 20¢ | 2.1x |
| Answer from 5 retrieved documents (RAG) | 5.9¢ | 1.7¢ | 3.6x |
| Classify 100 support tickets | 3.9¢ | 2.2¢ | 1.7x |
| Review 500 lines of code | 24¢ | 22¢ | 1.1x |
| Write a SQL query | 2.4¢ | 1.2¢ | 2.0x |
| Run a 50-step coding agent | $3.72 | $1.70 | 2.2x |
Specs and list prices
| GPT-6 Astra | Grok 4.7 | |
|---|---|---|
| Input per 1M | $10.00 | $2.00 |
| Output per 1M | $50.00 | $6.00 |
| Cached input per 1M | $1.00 | $0.50 |
| Context | 1.05M | 500K |
| Providers | 7 | 5 |
| Reasoning | always | always |
| LMArena Text | 1477 | 1444 |
| Released | Sep 4, 2026 | Sep 21, 2026 |
FAQ
Is GPT-6 Astra or Grok 4.7 cheaper?
Grok 4.7 is cheaper on 14 of 14 tasks and about 2.7x cheaper on average (geometric mean). GPT-6 Astra has the higher LMArena Text score (1477 vs 1444).
How much does GPT-6 Astra cost compared to Grok 4.7 per token?
GPT-6 Astra: $10.00 input and $50.00 output per 1M tokens. Grok 4.7: $2.00 input and $6.00 output. Token prices alone mislead - models use different numbers of tokens for the same task, which is what the task table shows.