Compare Claude Haiku 4.5 by Anthropic against DeepSeek Prover V2 by DeepSeek, context windows of 200K vs 164K, tested across 6 shared challenges. Updated April 2026.
Claude Haiku 4.5 and DeepSeek Prover V2 are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $0/M for DeepSeek Prover V2. Context windows: 200K vs 164K tokens. Compare their real outputs side by side below.
Claude Haiku 4.5 is made by anthropic while DeepSeek Prover V2 is from deepseek. Claude Haiku 4.5 has a 200K token context window compared to DeepSeek Prover V2's 164K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0/M for DeepSeek Prover V2.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude Haiku 4.5 uses 64.1x more hedging
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 Haiku 4.5 by Anthropic against DeepSeek Prover V2 by DeepSeek, context windows of 200K vs 164K, tested across 6 shared challenges. Updated April 2026.
Claude Haiku 4.5 and DeepSeek Prover V2 are both competitive models. Claude Haiku 4.5 costs $1/M input tokens vs $0/M for DeepSeek Prover V2. Context windows: 200K vs 164K tokens. Compare their real outputs side by side below.
Claude Haiku 4.5 is made by anthropic while DeepSeek Prover V2 is from deepseek. Claude Haiku 4.5 has a 200K token context window compared to DeepSeek Prover V2's 164K. On pricing, Claude Haiku 4.5 costs $1/M input tokens vs $0/M for DeepSeek Prover V2.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude Haiku 4.5 uses 64.1x more hedging
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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