Model Comparison

GPT-3.5 Turbo vs Grok-1.5

Grok-1.5 significantly outperforms across most benchmarks.

Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

GPT-3.5 Turbo outperforms in 0 benchmarks, while Grok-1.5 is better at 6 benchmarks (GPQA, HumanEval, MATH, MathVista, MMLU, MMMU).

Grok-1.5 significantly outperforms across most benchmarks.

Wed Apr 22 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Cost data unavailable.

Lowest available price from all providers
Wed Apr 22 2026 • llm-stats.com
OpenAI
GPT-3.5 Turbo
Input tokens$0.50
Output tokens$1.50
Best providerAzure
xAI
Grok-1.5
Input tokens$0.00
Output tokens$0.00
Best providerUnknown Organization
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Only GPT-3.5 Turbo specifies input context (16,385 tokens). Only GPT-3.5 Turbo specifies output context (4,096 tokens).

OpenAI
GPT-3.5 Turbo
Input16,385 tokens
Output4,096 tokens
xAI
Grok-1.5
Input- tokens
Output- tokens
Wed Apr 22 2026 • llm-stats.com

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-3.5 Turbo

Proprietary

Closed source

Grok-1.5

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-3.5 Turbo was released on 2023-03-21, while Grok-1.5 was released on 2024-03-28.

Grok-1.5 is 12 months newer than GPT-3.5 Turbo.

GPT-3.5 Turbo

Mar 21, 2023

3.1 years ago

Grok-1.5

Mar 28, 2024

2.1 years ago

1.0yr newer

Knowledge Cutoff

When training data ends

GPT-3.5 Turbo has a documented knowledge cutoff of 2021-09-30, while Grok-1.5's cutoff date is not specified.

We can confirm GPT-3.5 Turbo's training data extends to 2021-09-30, but cannot make a direct comparison without Grok-1.5's cutoff date.

GPT-3.5 Turbo

Sep 2021

Grok-1.5

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

OpenAI
Larger context window (16,385 tokens)
xAI
Higher GPQA score (35.9% vs 30.8%)
Higher HumanEval score (74.1% vs 68.0%)
Higher MATH score (50.6% vs 43.1%)
Higher MathVista score (52.8% vs 0.0%)
Higher MMLU score (81.3% vs 69.8%)
Higher MMMU score (53.6% vs 0.0%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-3.5 Turbo
xAI
Grok-1.5

FAQ

Common questions about GPT-3.5 Turbo vs Grok-1.5

Grok-1.5 significantly outperforms across most benchmarks. GPT-3.5 Turbo is made by OpenAI and Grok-1.5 is made by xAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-3.5 Turbo scores DROP: 70.2%, MMLU: 69.8%, HumanEval: 68.0%, MGSM: 56.3%, MATH: 43.1%. Grok-1.5 scores GSM8k: 90.0%, DocVQA: 85.6%, MMLU: 81.3%, HumanEval: 74.1%, MMMU: 53.6%.
GPT-3.5 Turbo supports 16K tokens and Grok-1.5 supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
GPT-3.5 Turbo is developed by OpenAI and Grok-1.5 is developed by xAI.