LangChain

LangChain Compute Units ($1.50/LCU) retired; all usage now metered in Standard Units (LSU, $1.00). Metering rates rescaled; Fleet allowances 5/25 LCU became 7/37 LSU; Sandbox 8 LSU.

Introduced Tuned Evaluators, a new pay-as-you-go evaluation feature priced at 0.01 LCU per Evaluation Run (Perceived Error), in public beta for Plus and Cloud Enterprise plans

VC-backed startup discount program now discloses a specific credit amount: up to $10,000 in credits (previously unspecified discounted rates and credits)

Added two new support channels to the plan comparison table: a self-service Support Portal (all plans) and Slack support

LangSmith added a new LSU unit, moved Deployment to size-based Serverless/Dedicated LCU/LSU metering (from per-run/uptime fees), and switched Fleet to LCU-metered usage with bundled model costs.

Developer plan Fleet agent limit increased from 1 to Unlimited, expanding access to Fleet agents for solo users on the free tier.

LangSmith Engine metered billing introduced at $1.50/LCU (LangChain Compute Unit). Enterprise plan packaging updated from 'Custom Fleet packages' to 'Custom packages for Fleet, Engine, and Sandboxes'.

LangSmith Sandboxes launched: ephemeral isolated sandboxes for agent-generated code, added to Plus plan with usage pricing (CPU $0.0576/vCPU-hr, Memory $0.0185/GiB-hr, Storage $0.000123/GiB-hr).

LangSmith Fleet added: create agents using everyday language. Developer: 1 Fleet agent + 50 runs/mo. Plus: unlimited Fleet agents + 500 runs/mo ($0.05/run overage). Enterprise: custom Fleet packages. Plus plan seat limit removed - changed from 'Up to 10 seats' to 'Add unlimited seats' at $39/seat/month.

Agent Builder rebranded to Fleet across pricing table [Number of Agent Builder agents renamed to Number of Fleet agents; Agent Builder runs renamed to Fleet runs; pricing unchanged at $0.05/run]

Developer plan community support channel renamed from 'Community Slack' to 'Community Forum' in the support comparison table.

Developer plan tagline updated from 'For solo developers getting started' to 'For solo users getting started', broadening the target audience description.

Deployment pricing changed from 'node execution' ($0.001/node) to 'agent run' ($0.005/run) - a 5x per-unit price increase with new billing semantics Insights (beta) feature added to LangSmith Observability & Evaluation section

LangGraph Platform free Dev deployment node executions increased from '100k nodes/mo' to 'unlimited' for Plus plan

LangGraph Platform deployment uptime pricing introduced - Development: $0.0007/min, Production: $0.0036/min LangGraph Platform pricing integrated into main pricing page - previously linked separately as 'Looking for LangGraph Platform pricing?', now shows unified pricing for all LangChain products with specific per-node and per-minute deployment costs

SSO login options (Google, GitHub) added for Developer and Plus tiers, with Custom SSO available for Enterprise Workspaces feature added across all tiers: Developer gets single default workspace, Plus gets up to 3 workspaces per organization, Enterprise gets up to 10 workspaces per organization