ChatGPT-4o Latest vs Grok-3 Mini
Both models are evenly matched across the benchmarks. Grok-3 Mini is 12.5x cheaper per token.
OpenAI · xAI · Updated for 2026
Which is better?
ChatGPT-4o Latest outperforms in 0 benchmarks, while Grok-3 Mini is better at 0 benchmarks. Both models are evenly matched across the benchmarks.
On price, Grok-3 Mini is roughly 12.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current benchmark, pricing, and model metadata for 2026.
Choose ChatGPT-4o Latest
- you want predictable pricing at $2.50/M input and $10.00/M output
Choose Grok-3 Mini
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- cost matters — it's about 12.5x cheaper per token
- you want the most recent training data — it shipped Feb 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
ChatGPT-4o Latest outperforms in 0 benchmarks, while Grok-3 Mini is better at 0 benchmarks.
Both models are evenly matched across the benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, ChatGPT-4o Latest ($2.50/1M tokens) is 8.3x more expensive than Grok-3 Mini ($0.30/1M tokens).
For output processing, ChatGPT-4o Latest ($10.00/1M tokens) is 20.0x more expensive than Grok-3 Mini ($0.50/1M tokens).
In conclusion, ChatGPT-4o Latest is more expensive than Grok-3 Mini.*
* 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 128,000 tokens. ChatGPT-4o Latest can generate longer responses up to 16,384 tokens, while Grok-3 Mini is limited to 8,000 tokens.
Input Capabilities
Supported data types and modalities
Both ChatGPT-4o Latest and Grok-3 Mini support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
ChatGPT-4o Latest
Grok-3 Mini
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
ChatGPT-4o Latest was released on 2024-05-13, while Grok-3 Mini was released on 2025-02-17.
Grok-3 Mini is 9 months newer than ChatGPT-4o Latest.
May 13, 2024
2.3 years ago
Feb 17, 2025
1.5 years ago
9mo newerKnowledge Cutoff
When training data ends
Grok-3 Mini has a documented knowledge cutoff of 2024-11-17, while ChatGPT-4o Latest's cutoff date is not specified.
We can confirm Grok-3 Mini's training data extends to 2024-11-17, but cannot make a direct comparison without ChatGPT-4o Latest's cutoff date.
—
Nov 2024
Provider Availability
ChatGPT-4o Latest is available from OpenAI. Grok-3 Mini is available from xAI.
ChatGPT-4o Latest
Grok-3 Mini
Outputs Comparison
Judge for yourself.
Run your own prompts against ChatGPT-4o Latest and Grok-3 Mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about ChatGPT-4o Latest vs Grok-3 Mini.