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Model comparison - Similar price, same tier

GPT-6.1 Sol vs Grok 4.7

GPT-6.1 Sol is from OpenAI and Grok 4.7 is from xAI. On list price, both charge $2 per 1M input tokens, and GPT-6.1 Sol charges 1.7x Grok 4.7's output price ($10 vs $6 per 1M tokens). GPT-6.1 Sol has a 1,050,000-token context window and Grok 4.7 500,000 tokens; GPT-6.1 Sol returns up to 128,000 output tokens per response, and no primary source states a max output for Grok 4.7. GPT-6.1 Sol was released on September 29, 2026 and Grok 4.7 on September 21, 2026. Both are closed-weights models, available only through an API.

Last verified from each provider's pricing page. All sources

OpenAI - Closed

GPT-6.1 Sol
Input / 1M
$2
Output / 1M
$10
Context
1.05M

xAI - Closed

Grok 4.7
Input / 1M
$2
Output / 1M
$6
Context
500K

Side-by-side specs

SpecGPT-6.1 SolGrok 4.7
ProviderOpenAIxAI
Input / 1M tokens$2$2
Output / 1M tokens$10$6
Cache read / 1M$0.10$0.50
Cache write / 1M$2.50-
Batch input / 1M$1-
Batch output / 1M$5-
Long-context rates above272,000 tokens200,000 tokens
Context window1,050,000500,000
Max output128,000-
Release date
WeightsClosedClosed
API model idgpt-6.1-solgrok-4.7
AI Gateway idopenai/gpt-6.1-solspacexai/grok-4.7
Last verified

Prices in USD per 1M tokens at each provider's standard first-party rate. A dash means the provider does not bill that item separately or no primary page states it.

What each costs in practice

The same three workloads every model page uses, worked from each model's standard list rates. Swap in your own token counts with the math on each model's page.

WorkloadGPT-6.1 SolGrok 4.7
One agent session1M input tokens and 100K output tokens, no caching.$3.00$2.60
A chat app10,000 requests a day at 2K input and 500 output tokens each.$90.00$2,700.00 per 30-day month$70.00$2,100.00 per 30-day month
The same session at a 90% cache hit90% of the input is read from the prompt cache. The one-time cache write premium is not included.$1.29$1.25
Show the math

GPT-6.1 Sol

  • One agent sessionInput: 1M x $2 = $2.00Output: 0.1M x $10 = $1.00
  • A chat appInput: 20M x $2 = $40.00Output: 5M x $10 = $50.00
  • The same session at a 90% cache hitCached input: 0.9M x $0.10 = $0.09Uncached input: 0.1M x $2 = $0.20Output: 0.1M x $10 = $1.00

Grok 4.7

  • One agent sessionInput: 1M x $2 = $2.00Output: 0.1M x $6 = $0.60
  • A chat appInput: 20M x $2 = $40.00Output: 5M x $6 = $30.00
  • The same session at a 90% cache hitCached input: 0.9M x $0.50 = $0.45Uncached input: 0.1M x $2 = $0.20Output: 0.1M x $6 = $0.60

Benchmarks under the same setting

Only boards that list both models under the same run setting appear here, one row per board and setting, with each score exactly as the board shows it. Scores on different boards use different scales and are never combined.

Board and settingGPT-6.1 SolGrok 4.7
Artificial Analysis Intelligence IndexIntelligence Index v4.3.2 (10 evaluations); reasoning effort: xhighOfficial leaderboard - artificialanalysis.ai5146
LMArena WebDev (Code Arena WebDev Overall)Code Arena WebDev Overall, default leaderboard view (891,922 votes, 145 models)Official leaderboard - arena.ai1755+13/-131639+10/-10

Set them up in your tools

Step-by-step guides whose official docs list GPT-6.1 Sol or Grok 4.7 by model id.

Model pages

OpenAIGPT-6.1 Sol pricing and specsFull rate card, worked cost examples and sources. Closed weights.xAIGrok 4.7 pricing and specsFull rate card, worked cost examples and sources. Closed weights.

FAQ

How do GPT-6.1 Sol and Grok 4.7 compare on price?

On list price, both charge $2 per 1M input tokens, and GPT-6.1 Sol charges 1.7x Grok 4.7's output price ($10 vs $6 per 1M tokens). For one agent session of 1M input and 100K output tokens with no caching, that is $3.00 on GPT-6.1 Sol and $2.60 on Grok 4.7. Prices are each provider's first-party list rates, verified October 17, 2026 and October 17, 2026.

What are the context windows of GPT-6.1 Sol and Grok 4.7?

GPT-6.1 Sol has a 1,050,000-token context window and Grok 4.7 500,000 tokens; GPT-6.1 Sol returns up to 128,000 output tokens per response, and no primary source states a max output for Grok 4.7.

Are GPT-6.1 Sol and Grok 4.7 open weights?

GPT-6.1 Sol is closed-weights and is called through OpenAI's API as gpt-6.1-sol. Grok 4.7 is closed-weights and is called through xAI's API as grok-4.7.

More comparisons

Sources

GPT-6.1 Sol verified from developers.openai.com; Grok 4.7 verified from docs.x.ai. This page is as current as the older of the two: .

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