The AI arena is free today

Open Superagent

GPT-6.1 Sol vs Grok-1.5V

GPT-6.1 Sol leads the LLM Stats Score 52.0 to -0.8.

OpenAI · xAI · Updated for 2026

Which is better?

GPT-6.1 Sol leads the overall LLM Stats Score 52.0 to -0.8, ranking #11 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose GPT-6.1 Sol

  • overall performance matters — it scores 52.0 and ranks #11 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026

Choose Grok-1.5V

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

GPT-6.1 Sol
OpenAI
Grok-1.5V
xAI
Core performance indexes
LLM Stats Score
52.0
#11
-0.8
#340
Reasoning
42.2
#50
-0.1
#327
Cost, coverage & limits
Benchmark wins
—
—
Input price
$2.00 / M
— / M
Output price
$10.00 / M
— / M
Context window
1,050,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
GPT-6.1 Sol
Grok-1.5V
Vision
31.6#26
-1.7#194
Multimodal
30.7#30
0.7#158
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

10 reported for GPT-6.1 Sol · 7 for Grok-1.5V

No common benchmarks found

GPT-6.1 Sol and Grok-1.5Vdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-6.1 Sol specifies input context (1,050,000 tokens). Only GPT-6.1 Sol specifies output context (128,000 tokens).

OpenAI
GPT-6.1 Sol
Input1,050,000 tokens
Output128,000 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Wed Sep 30 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6.1 Sol and Grok-1.5V support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-6.1 Sol

Text
Images
Audio
Video

Grok-1.5V

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-6.1 Sol

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-6.1 Sol was released on 2026-09-29, while Grok-1.5V was released on 2024-04-12.

GPT-6.1 Sol is 30 months newer than Grok-1.5V.

GPT-6.1 Sol

Sep 29, 2026

0 days ago

2.5yr newer
Grok-1.5V

Apr 12, 2024

2.5 years ago

Knowledge Cutoff

When training data ends

GPT-6.1 Sol has a documented knowledge cutoff of 2026-04-30, while Grok-1.5V's cutoff date is not specified.

We can confirm GPT-6.1 Sol's training data extends to 2026-04-30, but cannot make a direct comparison without Grok-1.5V's cutoff date.

GPT-6.1 Sol

Apr 2026

Grok-1.5V

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6.1 Sol and Grok-1.5V side-by-side, then vote on the output you prefer.

GPT-6.1 Sol
✓ Preferred
Grok-1.5V
Open in Playground

FAQ

Common questions about GPT-6.1 Sol vs Grok-1.5V.

Which is better, GPT-6.1 Sol or Grok-1.5V?

GPT-6.1 Sol leads the LLM Stats Score 52.0 to -0.8. GPT-6.1 Sol is made by OpenAI and Grok-1.5V is made by xAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-6.1 Sol compare to Grok-1.5V in benchmarks?

GPT-6.1 Sol scores HealthBench Consensus: 96.0%, DeepSWE 1.1: 75.2%, OSWorld 2.0: 71.4%, HealthBench Professional: 64.2%, HealthBench: 58.5%. Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%.

What are the context window sizes for GPT-6.1 Sol and Grok-1.5V?

GPT-6.1 Sol supports 1.1M tokens and Grok-1.5V supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-6.1 Sol and Grok-1.5V?

Key differences include LLM Stats Score (52.0 vs -0.8). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6.1 Sol and Grok-1.5V?

GPT-6.1 Sol is developed by OpenAI and Grok-1.5V is developed by xAI.

Related comparisons