Grok 4.5 vs Grok 4.6
Grok 4.5 and Grok 4.6 are tied at 47.0 on the LLM Stats Score. Grok 4.5 and Grok 4.6 cost the same.
xAI · xAI · Updated for 2026
Which is better?
Grok 4.5 and Grok 4.6 are closely matched on the overall LLM Stats Score at 47.0 and 47.0.
In the 1 individual benchmarks reported for both models, Grok 4.6 wins 1; 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 Grok 4.5
- you want predictable pricing at $2.00/M input and $6.00/M output
Choose Grok 4.6
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Individual benchmarks
14 reported for Grok 4.5 · 10 for Grok 4.6
Grok 4.5 outperforms in 0 benchmarks, while Grok 4.6 is better at 1 benchmark (DeepSWE 1.1).
Grok 4.6 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Grok 4.5 ($2.00/1M tokens) costs the same as Grok 4.6 ($2.00/1M tokens).
For output processing, Grok 4.5 ($6.00/1M tokens) costs the same as Grok 4.6 ($6.00/1M tokens).
In conclusion, Grok 4.5 and Grok 4.6 cost the same.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 500,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Grok 4.5 and Grok 4.6 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Grok 4.5
Grok 4.6
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 4.5 was released on 2026-07-16, while Grok 4.6 was released on 2026-08-12.
Grok 4.6 is 1 month newer than Grok 4.5.
Jul 16, 2026
1 months ago
Aug 12, 2026
2 weeks ago
3w newerKnowledge Cutoff
When training data ends
Both models have the same knowledge cutoff date of 2026-02-01.
They should have similar awareness of historical events and information up to this date.
Feb 2026
Feb 2026
Provider Availability
Grok 4.5 is available from xAI. Grok 4.6 is available from xAI.
Grok 4.5
Grok 4.6
Outputs Comparison
Judge for yourself.
Run your own prompts against Grok 4.5 and Grok 4.6 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Grok 4.5 vs Grok 4.6.