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Command R (Aug 2024) vs Grok 4.5

At a glance

Cohere's mid-tier retrieval-optimized model from August 2024.

128K ctx$0.15/$0.60 per M

xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.

89500K ctx$2.00/$6.00 per M#6/92
Agent Demos
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AI Output
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Benchmarks
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Reasoning
CI 86.2-90.3
CodingInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Capability
CapabilityECI88.5
Reasoning & Knowledge
Graduate Science93.4%Factual Recall53.5%
Math
Competition Math97.8%
Agentic
Terminal Tasks83.3%
Specs
128K
Context
4K
Max output
Aug 2024
Released
500K
Context
16K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input93%$0.15/M tokens
Output90%$0.60/M tokens
Live pricing, shown before you run
Input$2.00/M tokens
Output$6.00/M tokens
Cache read$0.30/M tokens
Web search$0.005/search
Chat with Command R (Aug 2024)Go to model
Chat with Grok 4.5Go to model
Frequently Asked Questions: Command R (Aug 2024) vs Grok 4.5▼

Which is better, Command R (Aug 2024) or Grok 4.5?

▼

Both Command R (Aug 2024) and Grok 4.5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Command R (Aug 2024) or Grok 4.5?

▼

Command R (Aug 2024) has a lower blended cost. Command R (Aug 2024): $0.15 input / $0.60 output. Grok 4.5: $2.00 input / $6.00 output.

Which has a larger context window, Command R (Aug 2024) or Grok 4.5?

▼

Grok 4.5 has a larger context window: Command R (Aug 2024) supports 128K tokens vs Grok 4.5 at 500K tokens.

Do both Command R (Aug 2024) and Grok 4.5 support vision?

▼

Grok 4.5 supports vision/image input, but Command R (Aug 2024) does not.

What are the key differences between Command R (Aug 2024) and Grok 4.5?

▼

Key differences: Command R (Aug 2024) is significantly cheaper; only Grok 4.5 supports vision input; only Grok 4.5 offers extended reasoning mode. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Command R (Aug 2024) and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.

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