Claude Opus 4.6 vs Grok Code Fast 1 Comparison

Comparing Claude Opus 4.6 and Grok Code Fast 1 across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.6 outperforms in 1 benchmarks (SWE-Bench Verified), while Grok Code Fast 1 is better at 0 benchmarks.

Claude Opus 4.6 significantly outperforms across most benchmarks.

Tue Mar 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Grok Code Fast 1 costs less

For input processing, Claude Opus 4.6 ($5.00/1M tokens) is 25.0x more expensive than Grok Code Fast 1 ($0.20/1M tokens).

For output processing, Claude Opus 4.6 ($25.00/1M tokens) is 16.7x more expensive than Grok Code Fast 1 ($1.50/1M tokens).

In conclusion, Claude Opus 4.6 is more expensive than Grok Code Fast 1.*

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

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

Claude Opus 4.6

Input tokens$5.00

Output tokens$25.00

Best providerAnthropic

Grok Code Fast 1

Input tokens$0.20

Output tokens$1.50

Best providerxAI

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Context Window

Maximum input and output token capacity

Grok Code Fast 1 accepts 256,000 input tokens compared to Claude Opus 4.6's 200,000 tokens. Claude Opus 4.6 can generate longer responses up to 128,000 tokens, while Grok Code Fast 1 is limited to 10,000 tokens.

Claude Opus 4.6

Input200,000 tokens

Output128,000 tokens

Grok Code Fast 1

Input256,000 tokens

Output10,000 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.6 supports multimodal inputs, whereas Grok Code Fast 1 does not.

Claude Opus 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.6

Text

Images

Audio

Video

Grok Code Fast 1

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 Opus 4.6

Proprietary

Closed source

Grok Code Fast 1

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.6 was released on 2026-02-05, while Grok Code Fast 1 was released on 2025-08-28.

Claude Opus 4.6 is 5 months newer than Grok Code Fast 1.

Claude Opus 4.6

Feb 5, 2026

1 months ago

5mo newer

Grok Code Fast 1

Aug 28, 2025

6 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Opus 4.6 is available from Anthropic. Grok Code Fast 1 is available from xAI. The availability of providers can affect quality of the model and reliability.