Staxly

Anthropic API vs LlamaIndex

API for Claude — frontier models for chat, tool use, agents, and long-context reasoning
vs. Data framework for LLMs — RAG-first with LlamaCloud + LlamaParse

Anthropic website ↗LlamaIndex website ↗

Pricing tiers

Anthropic API

Opus 4.7 — usage
Input $5 / output $25 / cache-write $6.25 / cache-read $0.50 per 1M tokens. Batch = 50% off.
Custom
Sonnet 4.6 — usage
Input $3 / output $15 / cache-write $3.75 / cache-read $0.30 per 1M tokens. Batch = 50% off.
Custom
Haiku 4.5 — usage
Input $1 / output $5 / cache-write $1.25 / cache-read $0.10 per 1M tokens. Batch = 50% off.
Custom
Anthropic website ↗

LlamaIndex

OSS (MIT)
MIT-licensed core. Python + TypeScript. Free forever.
$0 base (usage-based)
LlamaCloud — Free
Free tier of LlamaCloud. 1,000 pages/day via LlamaParse. Basic indexing.
Free
LlamaCloud — Paid
Pay-per-page parsing + usage-based indexing. $0.003 per page (Fast mode).
$0 base (usage-based)
LlamaCloud Enterprise
Custom. SSO, SOC2, higher rate limits, private index hosting.
Custom
LlamaIndex website ↗

Free-tier quotas head-to-head

Comparing opus-4-7 on Anthropic API vs oss on LlamaIndex.

MetricAnthropic APILlamaIndex
discount batch50 % off—

Features

Anthropic API · 0 features

    LlamaIndex · 16 features

    • Agents — Agent patterns: ReAct, function-calling, multi-agent workflows.
    • Document Readers — 200+ readers for PDF, web, Google Drive, SharePoint, Notion, S3, Slack.
    • Evaluations — Built-in eval framework: faithfulness, context precision/recall.
    • LlamaCloud — Managed indexing + retrieval platform. File connectors, auto-chunking, retrieval…
    • LlamaExtract — Schema-based structured extraction from unstructured docs.
    • LlamaHub — Community marketplace of readers, tools, prompts.
    • LlamaParse — Best-in-class PDF + complex document parser. Tables, math, layout preserved.
    • Multimodal — Image + text models, image retrieval.
    • Node Parsers — Document chunkers: token, sentence, semantic, hierarchical.
    • Observability (OpenLLMetry) — OTel-based tracing baked in.
    • Property Graph — Graph-based RAG (knowledge graphs from unstructured data).
    • Query Engines — Retrieval + response synthesis combos — router, sub-question, tree, etc.
    • RAG — End-to-end RAG patterns: ingest → index → retrieve → synthesize.
    • Tools — 50+ pre-built tool integrations.
    • Vector Store Integrations — 50+ vector DB integrations.
    • Workflows — Event-driven agent workflows (AgentWorkflow).

    Developer interfaces

    KindAnthropic APILlamaIndex
    CLIClaude Code CLI—
    SDKGo SDK, Java SDK, Python SDK, Ruby SDK, TypeScript SDK (@anthropic-ai/sdk)llama-index (Python), llamaindex (TS)
    RESTAWS Bedrock, Google Vertex AI, Microsoft Azure AI, REST API (Messages + Agents)LlamaCloud API, LlamaParse API
    MCP—LlamaIndex MCP
    Staxly is an independent catalog of developer platforms. Outbound links to Anthropic API and LlamaIndex are plain references to their official websites. Pricing is verified against vendor pages at publication time — reconfirm before buying.

    Want this comparison in your AI agent's context? Install the free Staxly MCP server.