NPM AI Packages Weekly Download Tracker

Data Overview

• Last Updated: 2026-04-19
• Update Frequency: Weekly
• Data Period: 2026-04-11 to 2026-04-17
• Total Packages Tracked: 30
• Total Weekly Downloads: 76,123,786
• Primary Source: NPM Downloads API

Key Facts

• Who: 30 AI-related NPM packages across SDKs, frameworks, and vector databases
• What: Weekly download statistics showing market share and growth trends in AI development tooling
• When: Data collected for the week of April 11-17, 2026
• Impact: 76.1 million total weekly downloads across tracked packages, with 4 packages exceeding 10 million downloads

Top Packages

Package	Weekly Downloads	Category	WoW Change	Previous
openai	18,030,081	SDK	+8.0%	16,698,019
@ai-sdk/provider	15,717,689	Framework	new	-
@anthropic-ai/sdk	14,784,331	SDK	+12.5%	13,143,015
ai (Vercel AI SDK)	11,370,737	Framework	+8.2%	10,505,460
@ai-sdk/openai	5,487,096	Framework	+12.8%	4,865,266
langsmith	4,567,313	Tooling	+4.5%	4,369,966
@anthropic-ai/claude-agent-sdk	4,220,634	SDK	+10.9%	3,804,949
@langchain/core	3,703,069	Framework	+3.8%	3,567,629
@ai-sdk/google	3,522,044	Framework	new	-
@langchain/openai	2,818,913	Framework	+2.4%	2,753,659
@google/generative-ai	2,628,961	SDK	+3.9%	2,530,422
langchain	2,162,114	Framework	new	-
@langchain/langgraph	2,032,327	Framework	+1.4%	2,004,043
@elastic/elasticsearch	1,987,657	Vector DB	new	-
@mistralai/mistralai	1,896,110	SDK	new	-
@langchain/textsplitters	1,470,618	Framework	new	-

Category Breakdown

Category	Total Downloads	Package Count	Top Package	Share
Framework	39,769,095	16	@ai-sdk/provider	52.2%
SDK	36,347,607	11	openai	47.7%
Vector DB	2,957,424	3	@elastic/elasticsearch	0.1%

Framework packages dominate with 52.2% of total tracked downloads, led by the Vercel AI SDK ecosystem. The @ai-sdk/provider package alone accounts for 15.7 million downloads, serving as the core abstraction layer for multi-provider AI development.

SDK packages represent 47.7% of downloads, with OpenAI SDK maintaining the top position at 18 million weekly downloads. However, Anthropic SDK’s growth rate (+12.5%) now exceeds OpenAI’s (+8.0%) for the second consecutive week.

Vector database clients remain a smaller segment at under 3 million combined downloads, with Elasticsearch leading, followed by Pinecone and Qdrant.

Emerging Packages

Package	Weekly Downloads	Category	Significance
@openai/agents	540,470	Framework	OpenAI’s official Agent SDK - new entry
@ai-sdk/deepseek	652,142	Framework	DeepSeek integration via Vercel AI SDK
@ai-sdk/anthropic	4,860,780	Framework	Anthropic provider for Vercel AI SDK
@ai-sdk/mistral	783,006	Framework	Mistral integration via Vercel AI SDK

Trends This Week

SDK Growth Comparison

The growth momentum has shifted in Anthropic’s favor:

Package	Weekly Downloads	Growth Rate	Absolute Change
@anthropic-ai/sdk	14,784,331	+12.5%	+1,641,316
openai	18,030,081	+8.0%	+1,332,062
@anthropic-ai/claude-agent-sdk	4,220,634	+10.9%	+415,685

Anthropic SDK added 1.64 million weekly downloads compared to OpenAI’s 1.33 million - a 23% difference in absolute growth despite OpenAI’s larger base. If this trend continues, Anthropic SDK could approach parity with OpenAI SDK within 18-24 months.

Vercel AI SDK Ecosystem Consolidation

The @ai-sdk/provider package (15.7 million downloads) now exceeds the core ai package (11.4 million), indicating:

1. Decoupled architecture adoption: Developers are using the provider abstraction layer independently
2. Multi-provider strategies: Teams building applications that switch between OpenAI, Anthropic, Google, Mistral, and DeepSeek
3. Infrastructure lock-in: Vercel AI SDK is becoming the de facto standard for AI provider abstraction

The ecosystem now includes direct support for DeepSeek via @ai-sdk/deepseek (652K downloads in its first tracked week), demonstrating rapid adoption of emerging model providers.

Agent SDK Competition

Package	Weekly Downloads	Category	Growth
@langchain/langgraph	2,032,327	Framework	+1.4%
@anthropic-ai/claude-agent-sdk	4,220,634	SDK	+10.9%
@openai/agents	540,470	Framework	new

LangGraph shows signs of plateauing at +1.4% growth, while Claude Agent SDK surged +10.9% to reach 4.2 million weekly downloads. OpenAI’s new Agents SDK entered the market at 540K downloads - a significant first-week number that suggests developers are actively evaluating OpenAI’s native agent orchestration solution.

Growth Rate Distribution

Package	Growth Rate	Momentum
@ai-sdk/openai	+12.8%	Accelerating
@anthropic-ai/sdk	+12.5%	Accelerating
@anthropic-ai/claude-agent-sdk	+10.9%	Strong
ai (Vercel)	+8.2%	Steady
openai	+8.0%	Steady
langsmith	+4.5%	Moderate
@langchain/core	+3.8%	Moderate
@google/generative-ai	+3.9%	Moderate
@langchain/openai	+2.4%	Slow
@langchain/langgraph	+1.4%	Plateauing

Methodology

Data collected via NPM Downloads API for the week of April 11-17, 2026. The tracker monitors 30 packages across three categories:

• SDK: Direct API client libraries from model providers
• Framework: Orchestration, agent frameworks, and abstraction layers
• Vector DB: Database client libraries for vector storage

Packages selected based on:

1. Direct relevance to AI/LLM application development
2. Minimum 350,000 weekly downloads (established adoption)
3. Active maintenance status

Limitations: NPM download counts include automated CI/CD installations and may not directly reflect production usage. Package downloads do not equate to unique users.

🔺 Scout Intel: What Others Missed

Confidence: high | Novelty Score: 45/100

The weekly download numbers reveal a strategic inflection point that market commentary overlooks: Anthropic SDK’s acceleration past OpenAI SDK in growth rate (+12.5% vs +8.0%) represents not just momentum, but a structural shift in developer preference. OpenAI still holds 18M vs Anthropic’s 14.7M weekly downloads, but Anthropic added 309,000 more absolute downloads this week despite the smaller base. Extrapolating current trajectories, Anthropic SDK would reach download parity with OpenAI SDK by Q3 2026.

The @ai-sdk/provider package reaching 15.7M downloads (now exceeding the core ai package’s 11.4M) signals that Vercel AI SDK has achieved infrastructure status - developers are building directly on the abstraction layer rather than the convenience wrapper. This creates strategic leverage: any model provider integrated into the Vercel ecosystem gains immediate distribution to 15.7M weekly installation points.

Key Implication: OpenAI’s new Agents SDK at 540K weekly downloads poses an existential threat to LangGraph’s positioning. With LangGraph at +1.4% growth and OpenAI Agents entering with native model integration, LangGraph risks losing the “default choice” status for agent orchestration within 6-12 months unless it differentiates on cross-provider capabilities.

Sources

• NPM Downloads API — Primary data source, 2026-04-11 to 2026-04-17