Model Comparison

Claude Opus 4.5 vs Grok-2 Image 1212Which is better in 2026?

Comparing Claude Opus 4.5 and Grok-2 Image 1212 across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 4.5 vs Grok-2 Image 1212 — which is better?

Claude Opus 4.5 (by Anthropic) and Grok-2 Image 1212 (by xAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude Opus 4.5 also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 4.5 if…

  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Nov 2025

Choose Grok-2 Image 1212 if…

  • you are already invested in the xAI ecosystem
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 4.5 and Grok-2 Image 1212don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Claude Opus 4.5 accepts 200,000 input tokens compared to Grok-2 Image 1212's 131,072 tokens. Only Claude Opus 4.5 specifies output context (64,000 tokens).

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
xAI
Grok-2 Image 1212
Input131,072 tokens
Output- tokens
Thu Jun 11 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas Grok-2 Image 1212 does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

Text
Images
Audio
Video

Grok-2 Image 1212

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 4.5

Proprietary

Closed source

Grok-2 Image 1212

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while Grok-2 Image 1212 was released on 2024-12-12.

Claude Opus 4.5 is 12 months newer than Grok-2 Image 1212.

Claude Opus 4.5

Nov 24, 2025

6 months ago

11mo newer
Grok-2 Image 1212

Dec 12, 2024

1.5 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while Grok-2 Image 1212's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without Grok-2 Image 1212's cutoff date.

Claude Opus 4.5

Mar 2025

Grok-2 Image 1212

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. Grok-2 Image 1212 is available from xAI.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

Grok-2 Image 1212

xai logo
xAI
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
xAI

No standout differentiators in the data we have for this pair.

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
xAI
Grok-2 Image 1212

FAQ

Common questions about Claude Opus 4.5 vs Grok-2 Image 1212.

Which is better, Claude Opus 4.5 or Grok-2 Image 1212?

Claude Opus 4.5 (Anthropic) and Grok-2 Image 1212 (xAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 4.5 compare to Grok-2 Image 1212 in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%.

What are the context window sizes for Claude Opus 4.5 and Grok-2 Image 1212?

Claude Opus 4.5 supports 200K tokens and Grok-2 Image 1212 supports 131K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 4.5 and Grok-2 Image 1212?

Key differences include context window (200K vs 131K), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and Grok-2 Image 1212?

Claude Opus 4.5 is developed by Anthropic and Grok-2 Image 1212 is developed by xAI.

Related comparisons