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Grok 4.5 vs Claude 3.5 Haiku

At a glance

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

89500K ctx$2.00/$6.00 per M#6/92

Fast and accurate with enhanced coding and tool use capabilities.

61200K ctx$0.80/$4.00 per M#68/92
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CI 86.2-90.3
CodingInsufficient data
Sources:Epoch ECI·Epoch AI·Provider·OpenRouter· as of 2026-07-10
Smarter44%
Capability
CapabilityECI44%88.5
Reasoning & Knowledge
Graduate Science145%93.4%Factual Recall699%53.5%
Math
Math Problems—Competition Math2171%97.8%Research Math—
Coding
Code Editing—
Agentic
Terminal Tasks83.3%
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Cheaper47%
Capability
CapabilityECI61.4
Reasoning & Knowledge
Graduate Science38.1%Factual Recall6.7%
Math
Math Problems46.4%Competition Math4.3%Research Math0.3%
Coding
Code Editing28.0%
Agentic
Terminal Tasks—
Specs
500K
Context
16K
Max output
Jul 2026
Released
200K
Context
8K
Max output
Nov 2024
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.00/M tokens
Output$6.00/M tokens
Cache read$0.30/M tokens
Web search50%$0.005/search
Live pricing, shown before you run
Input60%$0.80/M tokens
Output33%$4.00/M tokens
Cache read73%$0.08/M tokens
Cache write$1.00/M tokens
Web search$0.01/search
Chat with Grok 4.5Go to model
Chat with Claude 3.5 HaikuGo to model
Frequently Asked Questions: Grok 4.5 vs Claude 3.5 Haiku▼

Which is better, Grok 4.5 or Claude 3.5 Haiku?

▼

Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 61.4). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Grok 4.5 or Claude 3.5 Haiku?

▼

Claude 3.5 Haiku has a lower blended cost. Grok 4.5: $2.00 input / $6.00 output. Claude 3.5 Haiku: $0.80 input / $4.00 output.

Which has a larger context window, Grok 4.5 or Claude 3.5 Haiku?

▼

Grok 4.5 has a larger context window: Grok 4.5 supports 500K tokens vs Claude 3.5 Haiku at 200K tokens.

Do both Grok 4.5 and Claude 3.5 Haiku support vision?

▼

Yes, both Grok 4.5 and Claude 3.5 Haiku support vision/image input.

What are the key differences between Grok 4.5 and Claude 3.5 Haiku?

▼

Key differences: Grok 4.5 has a notably higher capability index (27.1 point gap); Claude 3.5 Haiku is significantly cheaper; 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 Grok 4.5 and Claude 3.5 Haiku for free on idapt.app to see which performs better for your specific needs.

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