Grok-4 Heavy vs Inkling 2 Small
Grok-4 Heavy and Inkling 2 Small are closely matched at 40.1 and 47.1 on the LLM Stats Score.
xAI · Thinking Machines Lab · Updated for 2026
Which is better?
Grok-4 Heavy and Inkling 2 Small are closely matched on the overall LLM Stats Score at 40.1 and 47.1.
The models split the 2 individual benchmarks reported for both models evenly.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok-4 Heavy
- you are already invested in the xAI ecosystem
Choose Inkling 2 Small
- your work emphasizes reasoning and coding — it leads those capability indexes
At a glance
The differences that matter most.
Individual benchmarks
6 reported for Grok-4 Heavy · 11 for Inkling 2 Small
Grok-4 Heavy outperforms in 1 benchmarks (Humanity's Last Exam), while Inkling 2 Small is better at 1 benchmark (GPQA).
Both models are evenly matched across the benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Inkling 2 Small specifies input context (256,000 tokens).
Input capabilities
Documented input modalities across available providers
Both Grok-4 Heavy and Inkling 2 Small support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok-4 Heavy
Inkling 2 Small
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
Inkling 2 Small was released on 2026-11-05, while Grok-4 Heavy's release date is not specified.
We can confirm Inkling 2 Small's release timeline, but cannot make a direct age comparison without Grok-4 Heavy's release date.
—
Nov 5, 2026
5 days ago
Knowledge Cutoff
When training data ends
Grok-4 Heavy has a documented knowledge cutoff of 2024-12-31, while Inkling 2 Small's cutoff date is not specified.
We can confirm Grok-4 Heavy's training data extends to 2024-12-31, but cannot make a direct comparison without Inkling 2 Small's cutoff date.
Dec 2024
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Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-4 Heavy and Inkling 2 Small side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-4 Heavy vs Inkling 2 Small.