Claude 3 Opus vs Grok-3 Mini Comparison

Comparing Claude 3 Opus and Grok-3 Mini across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude 3 Opus outperforms in 0 benchmarks, while Grok-3 Mini is better at 1 benchmark (GPQA).

Grok-3 Mini significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok-3 Mini costs less

For input processing, Claude 3 Opus ($15.00/1M tokens) is 50.0x more expensive than Grok-3 Mini ($0.30/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) is 150.0x more expensive than Grok-3 Mini ($0.50/1M tokens).

In conclusion, Claude 3 Opus is more expensive than Grok-3 Mini.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

Claude 3 Opus

Input tokens$15.00

Output tokens$75.00

Best providerAnthropic

Grok-3 Mini

Input tokens$0.30

Output tokens$0.50

Best providerxAI

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Context Window

Maximum input and output token capacity

Claude 3 Opus accepts 200,000 input tokens compared to Grok-3 Mini's 128,000 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while Grok-3 Mini is limited to 8,000 tokens.

Claude 3 Opus

Input200,000 tokens

Output200,000 tokens

Grok-3 Mini

Input128,000 tokens

Output8,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude 3 Opus and Grok-3 Mini support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude 3 Opus

Text

Images

Audio

Video

Grok-3 Mini

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3 Opus

Proprietary

Closed source

Grok-3 Mini

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while Grok-3 Mini was released on 2025-02-17.

Grok-3 Mini is 12 months newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.0 years ago

Grok-3 Mini

Feb 17, 2025

1.1 years ago

11mo newer

Knowledge Cutoff

When training data ends

Grok-3 Mini has a documented knowledge cutoff of 2024-11-17, while Claude 3 Opus'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 Claude 3 Opus's cutoff date.

Claude 3 Opus

—

Grok-3 Mini

Nov 2024

Provider Availability

Claude 3 Opus is available from Anthropic, Bedrock, Google. Grok-3 Mini is available from xAI. The availability of providers can affect quality of the model and reliability.