Just to reiterate

ANTHROPIC IS GIVING EVERY DECENTLY LARGE MAINTAINER $1000 WORTH OF INFERENCE (~x8 that in API prices)

They likely made a marketing budget for this of $1M or so

Other OSS stuff like Copilot or JetBrains costs to providers much less, $100/yr most (licenses are not expenses, only inference is)

Anthropic may get $500(average total for all 6mo) per user of just inference costs

6 months is because this is experimental and they have no idea what to expect

(their devrel department is meh as you could've noticed already), when they see it working they'll make it autorenew or something

ESR (Eric S.Raymond) asked OpenAI to match and got one, so the same offer from OpenAI will likely follow soon[tm]