Grok 3 is xAI's most advanced model, trained on the Colossus supercluster with 10 times the computational power of previous state-of-the-art models. It boasts a 1M-token context window and advanced reasoning capabilities, enhanced through large-scale reinforcement learning, enabling deep thought processes ranging from seconds to minutes for solving complex problems. The model achieves top-tier performance across academic benchmarks and real-world user evaluations, earning an Elo score of 1402 in the Chatbot Arena. It was released alongside Grok 3 Mini, a cost-efficient variant optimized for streamlined reasoning.
The OpenAI o3-mini is a high-speed, cost-effective reasoning model designed for STEM applications, with strong performance in science, mathematics, and coding. Launched in January 2025, it includes essential developer features such as function calling, structured outputs, and developer messages. The model offers three reasoning effort levels—low, medium, and high—allowing users to optimize between deeper analysis and faster response times. Unlike the o3 model, it lacks vision capabilities. Initially available to select developers in API usage tiers 3-5, it can be accessed via the Chat Completions API, Assistants API, and Batch API.
| Grok 3 Beta | o3-mini | |
|---|---|---|
Web Site
| ||
Provider
| ||
Chat
| ||
Release Date
| ||
Modalities
| text images video | text |
API Providers
| xAI | OpenAI API |
Knowledge Cut-off Date
| 2025-01 | Unknown |
Open Source
| No | No |
Pricing Input
| Not available | $1.10 per million tokens |
Pricing Output
| Not available | $4.40 per million tokens |
MMLU
| Not available | 86.9% pass@1, high effort Source |
MMLU-Pro
| 79.9% Base model Source | Not available |
MMMU
| 78% With Think mode Source | Not available |
HellaSwag
| Not available | Not available |
HumanEval
| Not available | Not available |
MATH
| Not available | 97.9% pass@1, high effort Source |
GPQA
| 84.6% With Think mode, Diamond Source | 79.7% 0-shot, high effort Source |
IFEval
| Not available | Not available |
SimpleQA
| - | - |
AIME 2024 | - | - |
AIME 2025 | - | - |
Aider Polyglot
| - | - |
LiveCodeBench v5
| - | - |
Global MMLU (Lite)
| - | - |
MathVista
| - | - |
Mobile Application |
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