Claude 3.5 Haiku vs Grok-4
Grok-4 significantly outperforms across most benchmarks. Claude 3.5 Haiku is 3.8x cheaper per token.
Anthropic · xAI · Updated for 2026
Which is better?
Claude 3.5 Haiku outperforms in 0 benchmarks, while Grok-4 is better at 1 benchmark (GPQA). Grok-4 significantly outperforms across most benchmarks.
On price, Claude 3.5 Haiku is roughly 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Grok-4 also accepts a larger context window (256,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose Claude 3.5 Haiku
- cost matters — it's about 3.8x cheaper per token
Choose Grok-4
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you process long inputs — it offers a 256,000 token context window
- you want the most recent training data — it shipped Jul 2025
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
Claude 3.5 Haiku outperforms in 0 benchmarks, while Grok-4 is better at 1 benchmark (GPQA).
Grok-4 significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude 3.5 Haiku ($0.80/1M tokens) is 3.8x cheaper than Grok-4 ($3.00/1M tokens).
For output processing, Claude 3.5 Haiku ($4.00/1M tokens) is 3.8x cheaper than Grok-4 ($15.00/1M tokens).
In conclusion, Grok-4 is more expensive than Claude 3.5 Haiku.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Grok-4 accepts 256,000 input tokens compared to Claude 3.5 Haiku's 200,000 tokens. Claude 3.5 Haiku can generate longer responses up to 200,000 tokens, while Grok-4 is limited to 8,000 tokens.
Input Capabilities
Supported data types and modalities
Grok-4 supports multimodal inputs, whereas Claude 3.5 Haiku does not.
Grok-4 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Claude 3.5 Haiku
Grok-4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Claude 3.5 Haiku was released on 2024-10-22, while Grok-4 was released on 2025-07-09.
Grok-4 is 9 months newer than Claude 3.5 Haiku.
Oct 22, 2024
1.8 years ago
Jul 9, 2025
1.1 years ago
8mo newerKnowledge Cutoff
When training data ends
Grok-4 has a documented knowledge cutoff of 2024-12-31, while Claude 3.5 Haiku's cutoff date is not specified.
We can confirm Grok-4's training data extends to 2024-12-31, but cannot make a direct comparison without Claude 3.5 Haiku's cutoff date.
—
Dec 2024
Provider Availability
Claude 3.5 Haiku is available from Bedrock, Google, Anthropic. Grok-4 is available from xAI.
Claude 3.5 Haiku
Grok-4
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude 3.5 Haiku and Grok-4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude 3.5 Haiku vs Grok-4.