GPT-4.1 nano vs Grok-1.5V
GPT-4.1 nano and Grok-1.5V are closely matched at 1.6 and -0.8 on the LLM Stats Score.
OpenAI · xAI · Updated for 2026
Which is better?
GPT-4.1 nano and Grok-1.5V are closely matched on the overall LLM Stats Score at 1.6 and -0.8.
In the 2 individual benchmarks reported for both models, GPT-4.1 nano 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-4.1 nano
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Apr 2025
Choose Grok-1.5V
- you are already invested in the xAI ecosystem
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
24 reported for GPT-4.1 nano · 7 for Grok-1.5V
GPT-4.1 nano outperforms in 2 benchmarks (MathVista, MMMU), while Grok-1.5V is better at 0 benchmarks.
GPT-4.1 nano significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only GPT-4.1 nano specifies input context (1,047,576 tokens). Only GPT-4.1 nano specifies output context (32,768 tokens).
Input capabilities
Documented input modalities across available providers
Both GPT-4.1 nano and Grok-1.5V support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-4.1 nano
Grok-1.5V
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
GPT-4.1 nano was released on 2025-04-14, while Grok-1.5V was released on 2024-04-12.
GPT-4.1 nano is 12 months newer than Grok-1.5V.
Apr 14, 2025
1.4 years ago
1.0yr newerApr 12, 2024
2.4 years ago
Knowledge Cutoff
When training data ends
GPT-4.1 nano has a documented knowledge cutoff of 2024-05-31, while Grok-1.5V's cutoff date is not specified.
We can confirm GPT-4.1 nano's training data extends to 2024-05-31, but cannot make a direct comparison without Grok-1.5V's cutoff date.
May 2024
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Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-4.1 nano and Grok-1.5V side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4.1 nano vs Grok-1.5V.