An internal Motorola presentation leak appears to confirm a GrapheneOS partnership for non-Pixel hardware, with an official announcement likely at MWC 2026.
Unfortunately the first device from this partnership is unlikely to be cheaper than the a series Pixel lineup. The GrapheneOS team already confirmed it will have a flagship snapdragon SOC. Have you looked into used a series Pixel devices? The 8a can be had refurbished in the low $200 range, and it will have software support for 5 more years. The 9a can be had for about $250 and will receive 6 more years of updates.
Unfortunately the first device from this partnership is unlikely to be cheaper than the a series Pixel lineup. The GrapheneOS team already confirmed it will have a flagship snapdragon SOC. Have you looked into used a series Pixel devices? The 8a can be had refurbished in the low $200 range, and it will have software support for 5 more years. The 9a can be had for about $250 and will receive 6 more years of updates.