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GPT-4o mini vs Grok-1.5V

GPT-4o mini and Grok-1.5V are closely matched at 3.6 and -0.8 on the LLM Stats Score.

OpenAI · xAI · Updated for 2026

Which is better?

GPT-4o mini and Grok-1.5V are closely matched on the overall LLM Stats Score at 3.6 and -0.8.

In the 2 individual benchmarks reported for both models, GPT-4o mini wins 2; this is a narrower head-to-head signal than the composite indexes.

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

Choose GPT-4o mini

  • you value its reported benchmark strengths — it wins 2 of 2 exact shared results
  • you want the most recent training data — it shipped Jul 2024

Choose Grok-1.5V

  • you are already invested in the xAI ecosystem

At a glance

The differences that matter most.

Core performance indexes
3.6
#315
-0.8
#340
4.1
#305
-0.1
#327
Cost, coverage & limits
Benchmark wins
2 of 2
0 of 2
Input price
$0.15 / M
— / M
Output price
$0.60 / M
— / M
Context window
128,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
GPT-4o mini
Grok-1.5V
-0.4#192
-1.7#194
2.5#152
0.7#158
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for GPT-4o mini · 7 for Grok-1.5V

2 shared

GPT-4o mini outperforms in 2 benchmarks (MathVista, MMMU), while Grok-1.5V is better at 0 benchmarks.

GPT-4o mini significantly outperforms across most benchmarks.

Mon Oct 05 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-4o mini specifies input context (128,000 tokens). Only GPT-4o mini specifies output context (16,384 tokens).

OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
xAI
Grok-1.5V
Input- tokens
Output- tokens
Mon Oct 05 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-4o mini and Grok-1.5V support multimodal inputs.

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

GPT-4o mini

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-4o mini

Proprietary

Closed source

Grok-1.5V

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-4o mini was released on 2024-07-18, while Grok-1.5V was released on 2024-04-12.

GPT-4o mini is 3 months newer than Grok-1.5V.

GPT-4o mini

Jul 18, 2024

2.2 years ago

3mo newer
Grok-1.5V

Apr 12, 2024

2.5 years ago

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while Grok-1.5V's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without Grok-1.5V's cutoff date.

GPT-4o mini

Oct 2023

Grok-1.5V

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-4o mini and Grok-1.5V side-by-side, then vote on the output you prefer.

GPT-4o mini
✓ Preferred
Grok-1.5V
Open in Playground

FAQ

Common questions about GPT-4o mini vs Grok-1.5V.

Which is better, GPT-4o mini or Grok-1.5V?

GPT-4o mini and Grok-1.5V are closely matched on the LLM Stats Score at 3.6 and -0.8. GPT-4o mini 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-4o mini compare to Grok-1.5V in benchmarks?

GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%. 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-4o mini and Grok-1.5V?

GPT-4o mini supports 128K 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-4o mini and Grok-1.5V?

Key differences include LLM Stats Score (3.6 vs -0.8). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4o mini and Grok-1.5V?

GPT-4o mini is developed by OpenAI and Grok-1.5V is developed by xAI.