This is the most comprehensive all-time Bitcoin/Ethereum price comparison history chart in USD you will find online. Updated daily. The chart is interactive:

• Zoom: click-drag
• Pan: shift-click-drag
• Restore zoom level: double-click

Price data begin on genesis block with zero price.

The Ether exchange rate for 2015-08-09 and later is from the CoinDesk.

See also following:

Variants

• ETH in BTC (and BTC in ETH)
• log
• linear
• hafuch (and hafuch-linear)
• monthly (low)
• yearly (low)
• see also All-time Bitcoin price chart