Grok-3 vs Grok-4
Grok-3 and Grok-4 are closely matched at 30.7 and 33.9 on the LLM Stats Score. Grok-3 and Grok-4 cost the same.
xAI · xAI · Updated for 2026
Which is better?
Grok-3 and Grok-4 are closely matched on the overall LLM Stats Score at 30.7 and 33.9.
In the 3 individual benchmarks reported for both models, Grok-3 wins 2; this is a narrower head-to-head signal than the composite indexes.
Grok-4 also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Grok-3
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
Choose Grok-4
- you process long inputs — it offers a 256,000 token context window
- you want the most recent training data — it shipped Jul 2025
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
5 reported for Grok-3 · 7 for Grok-4
Grok-3 outperforms in 2 benchmarks (AIME 2025, LiveCodeBench), while Grok-4 is better at 1 benchmark (GPQA).
Grok-3 shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Grok-3 ($3.00/1M tokens) costs the same as Grok-4 ($3.00/1M tokens).
For output processing, Grok-3 ($15.00/1M tokens) costs the same as Grok-4 ($15.00/1M tokens).
In conclusion, Grok-3 and Grok-4 cost the same.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 accepts 256,000 input tokens compared to Grok-3's 128,000 tokens. Both models can generate responses up to 8,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Grok-3 and Grok-4 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok-3
Grok-4
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
Grok-3 was released on 2025-02-17, while Grok-4 was released on 2025-07-09.
Grok-4 is 5 months newer than Grok-3.
Feb 17, 2025
1.6 years ago
Jul 9, 2025
1.2 years ago
4mo newerKnowledge Cutoff
When training data ends
Grok-3 has a knowledge cutoff of 2024-11-17, while Grok-4 has a cutoff of 2024-12-31.
Grok-4 has more recent training data (up to 2024-12-31), making it potentially better informed about events through that date compared to Grok-3 (2024-11-17).
Nov 2024
Dec 2024
1 mo newerProvider Availability
Grok-3 is available from xAI. Grok-4 is available from xAI.
Grok-3
Grok-4
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok-3 and Grok-4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok-3 vs Grok-4.