Two model routes have different endings: one moves to paid pricing, the other stops. The practical decision also includes privacy, fallback behaviour and tool costs.
A free route to Nemotron 3.5 Lightning invites experimentation. The useful story is what the model can do—and which inputs do not belong in that trial.
A2A 1.0 gives independent agents a shared model for discovery, tasks, messages and artifacts. The hard part is deciding when collaboration is worth its cost and risk.
MCP's 2026 specification moves the protocol toward stateless, scalable infrastructure. Here is what changed, what it enables and what teams still need to secure themselves.