Compare DeepSeek Prover V2 by DeepSeek against Horizon Alpha by OpenRouter, context windows of 164K vs 256K, tested across 6 shared challenges. Updated April 2026.
DeepSeek Prover V2 and Horizon Alpha are both competitive models. DeepSeek Prover V2 costs $0/M input tokens vs $0/M for Horizon Alpha. Context windows: 164K vs 256K tokens. Compare their real outputs side by side below.
DeepSeek Prover V2 is made by deepseek while Horizon Alpha is from openrouter. DeepSeek Prover V2 has a 164K token context window compared to Horizon Alpha's 256K. On pricing, DeepSeek Prover V2 costs $0/M input tokens vs $0/M for Horizon Alpha.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Horizon Alpha uses 22.2x 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 DeepSeek Prover V2 by DeepSeek against Horizon Alpha by OpenRouter, context windows of 164K vs 256K, tested across 6 shared challenges. Updated April 2026.
DeepSeek Prover V2 and Horizon Alpha are both competitive models. DeepSeek Prover V2 costs $0/M input tokens vs $0/M for Horizon Alpha. Context windows: 164K vs 256K tokens. Compare their real outputs side by side below.
DeepSeek Prover V2 is made by deepseek while Horizon Alpha is from openrouter. DeepSeek Prover V2 has a 164K token context window compared to Horizon Alpha's 256K. On pricing, DeepSeek Prover V2 costs $0/M input tokens vs $0/M for Horizon Alpha.
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Horizon Alpha uses 22.2x 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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