Grok 4.7 vs GPT-6.1 Sol
Grok 4.7 costs $2.00 / $6.00 and GPT-6.1 Sol costs $2.00 / $10.00 per million input / output tokens. At a typical 3:1 mix, Grok 4.7 is 1.3× cheaper than GPT-6.1 Sol.
Input
$2.00
per 1M
Output
$6.00
per 1M
Cached
$0.50
500K context
GPT-6.1 Sol
OpenAI
Input
$2.00
per 1M
Output
$10.00
per 1M
Cached
$0.10
1.05M context
Side by side
Green marks the cheaper price, larger context window, bigger discount or higher score.
| Detail | Grok 4.7 | GPT-6.1 Sol |
|---|---|---|
| Input per 1M | $2.00 | $2.00 |
| Output per 1M | $6.00 | $10.00 |
| Blended per 1M (3:1) | $3.00 | $4.00 |
| Cached input per 1M | $0.50 | $0.10 |
| Batch or off-peak discount | None | 50% (batch) |
| Long prompts | Over 200K: $4 / $12 | Over 272K: 2× in, 1.5× out |
| Context window | 500K | 1.05M |
| Released | 21 Sep 2026 | 29 Sep 2026 |
| Open weights | No | No |
| Verified | 27 Sep 2026 | 2 Oct 2026 |
Sources: xAI pricing and OpenAI model page.
Monthly cost on three workloads
List prices, no batch discount. The cached share applies where a model has a cache rate.
| Workload | Grok 4.7 | GPT-6.1 Sol | Difference |
|---|---|---|---|
| Customer chat assistant50,000 conversations a month, about 2,000 tokens in and 400 out each; 50% cached | $245 | $305 | $60.00 |
| Document Q&A (RAG)20,000 questions a month over retrieved documents, 12,000 in and 600 out; 30% cached | $444 | $463 | $19.20 |
| Coding agent400 tasks a month, 40 steps each with a growing context; 85% cached | $592 | $369 | $223 |
How they differ
- Grok 4.7 is cheaper on output ($6 vs $10), which matters most for long answers and reasoning models.
- GPT-6.1 Sol accepts longer prompts (1.05M vs 500K tokens).
- Cached input is cheaper on GPT-6.1 Sol ($0.10 vs $0.50), which favours agents and chat apps that resend the same context.
- Only GPT-6.1 Sol offers a batch discount for jobs that can wait.
Recent changes
All changes- GPT-6.1 Sol replaced GPT-6 Sol at the same $2 / $10 per 1M tokens, with cached input cut from $0.20 to $0.10.
- OpenAI launched GPT-6 Sol at $2 / $10 and GPT-6 Luna at $0.10 / $0.50.
- xAI launched Grok 4.7 at $2 / $6 for prompts under 200K tokens.
- OpenAI launched GPT-6 Astra at $10 / $50, its most expensive standard model.
- xAI launched Grok 4.6 at $2 / $6.
Related comparisons
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Claude Opus 5.5 vs GPT-6.1 Sol$4.00 / $20.00 · $2.00 / $10.00- Claude Sonnet 5.5 vs GPT-6.1 Sol$2.00 / $10.00 · $2.00 / $10.00
Gemini 3.8 Flash vs GPT-6.1 Sol$0.75 / $3.75 · $2.00 / $10.00
Qwen3.8 Max vs GPT-6.1 Sol$2.00 / $6.00 · $2.00 / $10.00- Grok 4.7 vs Claude Opus 5.5$2.00 / $6.00 · $4.00 / $20.00
Muse Spark 1.3 vs GPT-6.1 Sol$1.25 / $4.25 · $2.00 / $10.00