Grok 4.7 vs GPT-6.1 Sol
Official xAI and OpenAI API prices and LMArena scores, checked 2026-10-18. Add up to 2 more models to compare 4.
Grok 4.7 costs less; GPT-6.1 Sol wins more LMArena tasks.
Same input price ($2 per 1M); Grok 4.7 is 1.7x cheaper on output. GPT-6.1 Sol scores 85 points higher for vision. Across 7 shared LMArena tasks, GPT-6.1 Sol leads 7 to 0. GPT-6.1 Sol has the longer context window (1.05M vs 500K tokens). A medium month (20M input + 5M output tokens) costs $70 on Grok 4.7 and $90 on GPT-6.1 Sol.
- Pick Grok 4.7 if you want the lower bill ($70 vs $90 for a medium month).
- Pick GPT-6.1 Sol if you care most about vision (+85), coding (+41) and reasoning and math (+39), you need the 1.05M context window or you reuse long prompts (cached input $0.10 vs $0.50).
Medium: 20M input + 5M output tokens a month at list price (short-context rate, no caching or batch discounts).
Marked side is better: lower for prices, higher for context and scores. Bars are scaled to the larger of the two.
| Spec | Grok 4.7 | GPT-6.1 Sol |
|---|---|---|
| Price per 1M tokens | ||
| Input | $2 | $2 |
| Cached input | $0.50 | $0.10 |
| Output | $6 | $10 |
| Blend 3:1 | $3 | $4 |
| Sample month, medium | $70 | $90 |
| Context | ||
| Context window | 500K tokens | 1.05M tokens |
| Quality (LMArena, out of 100) | ||
| Coding | 41/100 #12 of 23 | 82/100 #4 of 23 |
| Chat | 0/100 #21 of 25 | 30/100 #10 of 25 |
| Creative writing | 0/100 #21 of 25 | 18/100 #12 of 25 |
| Roleplay and characters | 0/100 #25 of 25 | 15/100 #11 of 25 |
| Reasoning and math | 0/100 #21 of 24 | 39/100 #12 of 24 |
| Vision | 0/100 #18 of 21 | 85/100 #2 of 21 |
| Long documents | Not ranked | Not ranked |
| Cheap bulk and agents | 53/100 #13 of 23 | 84/100 #4 of 23 |
| Details | ||
| Provider | xAI | OpenAI |
| API model id | grok-4.7 | gpt-6.1-sol |
| Notes | Prompts under 200K. Longer prompts cost $4 in, $12 out. | Prompts up to 272K. Longer prompts cost $4 in, $15 out. |
| Sources | ||
| Last checked | 2026-10-18 | 2026-10-18 |
| Official pricing | xAI pricing | OpenAI pricing |
Plans from data checked hourly against each vendor's official pricing page. Vendors state limits in different units, so we quote them as published. Team and enterprise plans are per seat.
API prices in USD per 1M tokens from each provider's official pricing page. Blend 3:1 = (3 x input + output) / 4. Sample month = stated input and output tokens at the list price, no caching. Quality: relative score out of 100 on each LMArena leaderboard (100 = top model we price on that board, n/a = not ranked there), data licensed CC BY 4.0. See how we pick.
Where each one ranks on LMArena
Relative score out of 100 on each leaderboard (100 = the top model we price there), with the rank among the models from our API price table that appear on that board.
- Coding (Code Arena): Grok 4.7 #12 of 23 (41/100), GPT-6.1 Sol #4 of 23 (82/100)
- Chat (Text Arena): Grok 4.7 #21 of 25 (0/100), GPT-6.1 Sol #10 of 25 (30/100)
- Creative writing (Text Arena creative writing): Grok 4.7 #21 of 25 (0/100), GPT-6.1 Sol #12 of 25 (18/100)
- Roleplay and characters (Text Arena multi-turn): Grok 4.7 #25 of 25 (0/100), GPT-6.1 Sol #11 of 25 (15/100)
- Reasoning and math (Text Arena math): Grok 4.7 #21 of 24 (0/100), GPT-6.1 Sol #12 of 24 (39/100)
- Vision (Vision Arena): Grok 4.7 #18 of 21 (0/100), GPT-6.1 Sol #2 of 21 (85/100)
- Long documents (Document Arena): Grok 4.7 not ranked, GPT-6.1 Sol not ranked
- Cheap bulk and agents (Agent Arena): Grok 4.7 #13 of 23 (53/100), GPT-6.1 Sol #4 of 23 (84/100)
Pricing details from the official pages
Grok 4.7 lists $2 input, $6 output, $0.50 cached input per 1M tokens on xAI pricing. GPT-6.1 Sol lists $2 input, $10 output, $0.10 cached input per 1M tokens on OpenAI pricing. Prices checked 2026-10-18.
- Grok 4.7: Prompts under 200K. Longer prompts cost $4 in, $12 out.
- GPT-6.1 Sol: Prompts up to 272K. Longer prompts cost $4 in, $15 out.
Sample monthly bill at list price, no caching: Light (2M input + 0.5M output tokens): $7 vs $9. Medium (20M input + 5M output tokens): $70 vs $90. Heavy (200M input + 50M output tokens): $700 vs $900.
FAQ
Is Grok 4.7 cheaper than GPT-6.1 Sol?
Grok 4.7 costs $2 input and $6 output per 1M tokens; GPT-6.1 Sol costs $2 and $10. For a medium month (20M input + 5M output tokens) Grok 4.7 is cheaper: $70 vs $90.
Which is better for coding, Grok 4.7 or GPT-6.1 Sol?
On LMArena's Code Arena Grok 4.7 scores 41/100 (#12 of 23) and GPT-6.1 Sol 82/100 (#4 of 23), so GPT-6.1 Sol is ahead by 41 points.
Which has the bigger context window?
Grok 4.7: 500K tokens. GPT-6.1 Sol: 1.05M tokens. Long prompts can cost more; see the pricing notes above.
How much do Grok 4.7 and GPT-6.1 Sol cost per month?
Light (2M input + 0.5M output tokens): $7 vs $9. Medium (20M input + 5M output tokens): $70 vs $90. Heavy (200M input + 50M output tokens): $700 vs $900. Pick your own token counts in the plan vs API calculator.
Where do these numbers come from?
Prices come from each provider's official pricing page, checked daily. Quality is the relative score on the LMArena leaderboard dataset, licensed CC BY 4.0. Where a model is not ranked we show n/a.