GPT-5.1 Instant vs Grok-2 mini
GPT-5.1 Instant leads the LLM Stats Score 36.5 to 8.6.
OpenAI · xAI · Updated for 2026
Which is better?
GPT-5.1 Instant leads the overall LLM Stats Score 36.5 to 8.6, ranking #79 overall.
In the 2 individual benchmarks reported for both models, GPT-5.1 Instant 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-5.1 Instant
- overall performance matters — it scores 36.5 and ranks #79 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Nov 2025
Choose Grok-2 mini
- 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
9 reported for GPT-5.1 Instant · 8 for Grok-2 mini
GPT-5.1 Instant outperforms in 2 benchmarks (GPQA, MMMU), while Grok-2 mini is better at 0 benchmarks.
GPT-5.1 Instant 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-5.1 Instant specifies input context (400,000 tokens). Only GPT-5.1 Instant specifies output context (128,000 tokens).
Input capabilities
Documented input modalities across available providers
Both GPT-5.1 Instant and Grok-2 mini support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.1 Instant
Grok-2 mini
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-5.1 Instant was released on 2025-11-12, while Grok-2 mini was released on 2024-08-13.
GPT-5.1 Instant is 15 months newer than Grok-2 mini.
Nov 12, 2025
10 months ago
1.2yr newerAug 13, 2024
2.1 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.1 Instant and Grok-2 mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.1 Instant vs Grok-2 mini.