GPT-4 Turbo vs Grok-1.5
GPT-4 Turbo leads the LLM Stats Score 9.0 to -2.7.
OpenAI · xAI · Updated for 2026
Which is better?
GPT-4 Turbo leads the overall LLM Stats Score 9.0 to -2.7, ranking #287 overall.
In the 4 individual benchmarks reported for both models, GPT-4 Turbo wins 4; 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 Turbo
- overall performance matters — it scores 9.0 and ranks #287 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 4 of 4 exact shared results
- you want the most recent training data — it shipped Apr 2024
Choose Grok-1.5
- 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
6 reported for GPT-4 Turbo · 9 for Grok-1.5
GPT-4 Turbo outperforms in 4 benchmarks (GPQA, HumanEval, MATH, MMLU), while Grok-1.5 is better at 0 benchmarks.
GPT-4 Turbo 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 Turbo specifies input context (128,000 tokens). Only GPT-4 Turbo specifies output context (4,096 tokens).
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 Turbo was released on 2024-04-09, while Grok-1.5 was released on 2024-03-28.
GPT-4 Turbo is 0 month newer than Grok-1.5.
Apr 9, 2024
2.5 years ago
1w newerMar 28, 2024
2.5 years ago
Knowledge Cutoff
When training data ends
GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Grok-1.5's cutoff date is not specified.
We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without Grok-1.5's cutoff date.
Dec 2023
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Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-4 Turbo and Grok-1.5 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-4 Turbo vs Grok-1.5.