Compare Claude 3 Haiku by Anthropic against Grok 4.20 Beta by xAI, context windows of 200K vs 2.0M, tested across 53 shared challenges. Updated April 2026.
Claude 3 Haiku and Grok 4.20 Beta are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $2/M for Grok 4.20 Beta. Context windows: 200K vs 2000K tokens. Compare their real outputs side by side below.
Claude 3 Haiku is made by anthropic while Grok 4.20 Beta is from xai. Claude 3 Haiku has a 200K token context window compared to Grok 4.20 Beta's 2000K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $2/M for Grok 4.20 Beta.
No community votes yet. On paper, Grok 4.20 Beta has the edge — bigger model tier, newer, bigger context window.
Claude 3 Haiku is 4.8x cheaper per token — worth considering if cost matters.
Grok 4.20 Beta uses 61.7x more headings
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare Claude 3 Haiku by Anthropic against Grok 4.20 Beta by xAI, context windows of 200K vs 2.0M, tested across 53 shared challenges. Updated April 2026.
Claude 3 Haiku and Grok 4.20 Beta are both competitive models. Claude 3 Haiku costs $0.25/M input tokens vs $2/M for Grok 4.20 Beta. Context windows: 200K vs 2000K tokens. Compare their real outputs side by side below.
Claude 3 Haiku is made by anthropic while Grok 4.20 Beta is from xai. Claude 3 Haiku has a 200K token context window compared to Grok 4.20 Beta's 2000K. On pricing, Claude 3 Haiku costs $0.25/M input tokens vs $2/M for Grok 4.20 Beta.
No community votes yet. On paper, Grok 4.20 Beta has the edge — bigger model tier, newer, bigger context window.
Claude 3 Haiku is 4.8x cheaper per token — worth considering if cost matters.
Grok 4.20 Beta uses 61.7x more headings
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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48 fights queued
36+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy