Featherless
$25 (Chat) / from $50 (Developer) per mo
Models: Open-weight only (DeepSeek, GLM, Kimi…)
What "flat" means: Chat plan: flat price with uncapped tokens, but for chat typed by you. Developer plan: monthly credits billed per token.
The catch: The flat-price Chat plan excludes coding agents and API traffic (32K context, 4 concurrent units); coding agents need the per-token Developer plan (up to 256K context).
Pick Featherless when
+Open-weight models genuinely cover your quality needs
+You chat with open-weight models yourself and want uncapped tokens at a low flat price
+Model pinning on the open-weight universe matters to you
GitHub Copilot Pro / Pro+ / Max
$10 / $39 / $100 per mo
Models: Curated multi-model
What "flat" means: Fixed price with a monthly AI Credits allowance (1,500 / 7,000 / 20,000 credits, 1 credit = $0.01) for chat, agent mode and CLI; code completions don't use credits.
The catch: Chat and agent mode draw down AI credits at token rates, and usage past the allowance is billed at $0.01 a credit, which complicates the 'simple' price. Free, Pro and Pro+ interactions may be used for training unless you opt out.
Pick GitHub Copilot Pro / Pro+ / Max when
+You live in GitHub and VS Code and want the lowest-friction install
+Autocomplete plus occasional agent use, not heavy agentic volume
+Your team already standardizes on GitHub tooling and billing