LangChain launches ephemeral agent sandboxes with usage-based pricing
What happened
Between the May 11, 2026 and May 18, 2026 captures of LangChain's pricing page, Pulse recorded one change: 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). Pulse files it as a packaging change (new add-on) with an upward direction. Pulse's latest capture (Oct 5, 2026) lists Plus at $39.
It lands 46 days after LangChain's previous change, "LangChain launches LangSmith Fleet for no-code AI agent creation" (Apr 3, 2026). Before that Pulse recorded "LangChain rebrands Agent Builder to Fleet across pricing tiers" (Mar 24, 2026). LangChain has been tracked since 2024-11-17.
In the same window Anthropic, OpenAI, Cohere, Together AI and Huggingface also changed their AI & Machine Learning pricing pages. Those moves are listed further down, and the Pulse Agent can compare them side by side.
- Plus · Add-onAddedNo LangSmith SandboxesLangSmith Sandboxes
| Plan | Field | Before | After | Change |
|---|---|---|---|---|
| Plus | Add-on | No LangSmith Sandboxes | LangSmith Sandboxes | Added |
Values as written on LangChain's public pricing page in the two captures Pulse compared; where the page states no number, the cells give the wording before and after.
Evidence
The two captures Pulse comparedFull-page captures of LangChain's pricing page (langchain.com) from May 11, 2026 and May 18, 2026; the change is marked near the top of the page, where LangSmith Sandboxes now appears.
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LangChain, the last 90 days
Full history- Jul 21, 2026packagingLangChain overhauls LangSmith billing: new LSU, size-based Serverless/Dedicat...
- Jun 16, 2026improvedLangChain unlocks unlimited Fleet agents for free Developer plan
- Jun 1, 2026packagingLangChain launches metered billing at $1.50 per compute unit
- May 19, 2026packagingLangChain launches ephemeral agent sandboxes with usage-based pricing · this change
- Apr 3, 2026packagingLangChain launches LangSmith Fleet for no-code AI agent creation
- Mar 24, 2026packagingLangChain rebrands Agent Builder to Fleet across pricing tiers
Across AI & Machine Learning in the same window
All AI & Machine Learning changes- AnthropicMay 13Anthropic API consolidates Microsoft 365 and Outlook integrations
- OpenAIMay 11OpenAI API raises GPT-Realtime-2 text output 50%, adds translate
- CohereMay 4Cohere Adds Rerank 4 Pro Large to Model Vault at $10/hr
- Together AIApr 24Together AI Triples Gemma 3n E4B Pricing to $0.06/$0.12 per 1M Tokens
- HuggingfaceApr 22Huggingface adds SCIM provisioning and OIDC SSO to enterprise plans
Questions about this change
Did LangChain raise prices in May 2026?
No list-price increase was recorded between May 11, 2026 and May 18, 2026. The change Pulse detected was a packaging change: new add-on.
What changed on LangChain's pricing page between May 11, 2026 and May 18, 2026?
Plus add-on: No LangSmith Sandboxes → LangSmith Sandboxes, added. Pulse compared the captures it took on May 11, 2026 and May 18, 2026; the before/after table above lists each item as written on the page.
How often does LangChain change its pricing?
Pulse recorded 2 other pricing-page changes for LangChain in the 90 days before this one; the previous change was "LangChain launches LangSmith Fleet for no-code AI agent creation" on Apr 3, 2026; LangChain has been tracked since 2024-11-17.