Grok 4.7 vs GPT-6.1 Sol
A side-by-side look at Grok 4.7 from xAI and GPT-6.1 Sol from OpenAI: list prices, context windows, licensing and capabilities, with monthly costs worked out for three common workloads.
The short version
- Lower list price: Grok 4.7, about 1.3× cheaper on a blended basis (three parts input to one part output).
- Larger context window: GPT-6.1 Sol (1.05M vs 500K tokens).
- Newer release: GPT-6.1 Sol (September 29, 2026).
Specs side by side
| Grok 4.7 | GPT-6.1 Sol | |
|---|---|---|
| Provider | xAI | OpenAI |
| Released | Sep 21, 2026 | Sep 29, 2026 |
| Status | Current | Current |
| Weights and license | Closed Proprietary | Closed Proprietary |
| Tier | Frontier | Advanced |
| Context window | 500K | 1.05M |
| Max output | — | 125K |
| Input per 1M tokens | $2 | $2 |
| Output per 1M tokens | $6 | $10 |
| Cached input per 1M | $0.50 | $0.10 |
| Input types | Text, Images | Text, Images |
| Reasoning mode | Yes | Yes |
| Tool calling | Yes | Yes |
| Parameters | Undisclosed | Undisclosed |
Highlighted cells are better on that line: lower price or larger limit. List prices, standard tier, checked October 10, 2026.
What they cost for real workloads
| Workload (monthly) | Grok 4.7 | GPT-6.1 Sol | Difference |
|---|---|---|---|
| Support chatbot30,000 conversations a month, 2,000 input and 400 output tokens each | $192 | $240 | Grok 4.7 saves $48 |
| Document summaries2,000 documents a month, 12,000 input and 800 output tokens each | $58 | $64 | Grok 4.7 saves $6.40 |
| Coding agent1,000 tasks a month, 60,000 input and 6,000 output tokens each | $156 | $180 | Grok 4.7 saves $24 |
Standard rates without caching or batch discounts. Try your own volumes.
Choose Grok 4.7 if
- you mainly need it for research, which xAI emphasizes for this model
- cost per token is a deciding factor
- $2 input and $6 output per million tokens below 200K tokens
- built-in web search, X search and code execution tools
Choose GPT-6.1 Sol if
- you mainly need it for enterprise, which OpenAI emphasizes for this model
- you need more than 500K tokens of context in one request
- $2 input and $10 output per million tokens, with cached input at $0.10
- 1.05M-token context window
Our take
Both are positioned for agents, coding, reasoning. On list price the gap is about 1.3×, which matters most for high-volume, input-heavy workloads. Quality differences shift with every release, so treat this page as a shortlist tool: run 20-50 of your real tasks through both, score the outputs, and divide the bill by the number of tasks each one got right.
Read the full profiles: Grok 4.7 and GPT-6.1 Sol. For help designing that test, see how to read LLM benchmarks.
Frequently asked questions
Which is cheaper, Grok 4.7 or GPT-6.1 Sol?
Grok 4.7 has the lower list price: $2 input and $6 output per million tokens, versus $2 and $10. Discounts for caching and batch processing can change the real bill, so price your own token mix.
Which has the bigger context window?
GPT-6.1 Sol accepts 1.05M tokens, compared with 500K for Grok 4.7.
Can I run Grok 4.7 or GPT-6.1 Sol on my own hardware?
Grok 4.7 is closed, so only through hosted APIs. GPT-6.1 Sol is closed, so only through hosted APIs.
Is Grok 4.7 better than GPT-6.1 Sol?
It depends on the task. Public benchmarks and arena rankings move with every release and rarely match a specific workload. Use the specs here to shortlist, then test both on your own prompts and compare accuracy, latency and cost per correct answer.
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