Sygkrisi Agentic AI Frameworks: LangGraph vs CrewAI vs OpenAI Agents SDK vs Claude Agent SDK

Oi AI agents echoun metakinithei apo ereynitikes epideixes se systimata paragogis. Perissoteroi apo to 60% ton epicheirisiakon AI efarmogon anamenetai na perilamvanoun agentika stoicheia mechri to 2026. Alla i kataskevi agents apo to miden - diacheirisi vrogchon ergaleion, katastasis, mnimis, diacheirisis sfalmaton kai syntonismou pollalon agents - einai polyploki. Edoo mpainoun ta frameworks.

Tessera frameworks kyrarchoun to 2026: LangGraph, CrewAI, OpenAI Agents SDK kai Claude Agent SDK. Kathena proseggizei to idio provlima me themeliodoos diaforetiko tropo: na dosei sta LLM tin ikanotita na skeftontai, na schedkazoun, na chrisimopoioun ergaleia kai na synergazontai.

Me mia matia

LangGraph: O kataskevastis grafon

To LangGraph montelopoiei ta workflows ton agents os kateythynomena kyklika grafa. Orizete komvous (synartiseis pou ekteloun ergasia) kai akmes (metavaseis metaxy tous, proairetika me synthikes). I katastasi reei mesa apo to grafo kai diatireitai meso checkpointing.

Afto einai to pio safes kai elegchomeno framework - syndeete kathe vima monoi sas.

Vasikes ennoies

• StateGraph: o orismos tou grafou me typopoiimeni katastasi
• Nodes: synartiseis Python pou metaschimatizoun tin katastasi
• Edges: syndesmoi metaxy komvon, mporoun na einai me synthiki
• Checkpointing: ensoomatomeni monimotita gia makrochrones roes ergasias

Paradeigma kodika

from langgraph.graph import StateGraph, MessagesState, START, END
from langchain_openai import ChatOpenAI

llm = ChatOpenAI(model="gpt-4o")

def call_agent(state: MessagesState):
    response = llm.invoke(state["messages"])
    return {"messages": [response]}

def should_continue(state: MessagesState):
    last = state["messages"][-1]
    if last.tool_calls:
        return "tools"
    return END

def call_tools(state: MessagesState):
    # Execute tool calls and return results
    results = []
    for tool_call in state["messages"][-1].tool_calls:
        result = execute_tool(tool_call)
        results.append(result)
    return {"messages": results}

graph = StateGraph(MessagesState)
graph.add_node("agent", call_agent)
graph.add_node("tools", call_tools)
graph.add_edge(START, "agent")
graph.add_conditional_edges("agent", should_continue, {"tools": "tools", END: END})
graph.add_edge("tools", "agent")

app = graph.compile()
result = app.invoke({"messages": [{"role": "user", "content": "What's the weather?"}]})

Dynata simeia

• Leptoereis elegchos kathe vimatos kai metavasis
• Ensoomatomeno checkpointing kai human-in-the-loop
• Pliri isotimia me TypeScript
• Leitoyrgei me opoiondipote parocho LLM
• Kalytero gia polyplokes roes ergasias me synthiki diaklandosi kai vrogchous

Adynamies

• Apotomi kampyli mathisis - prepei na katanoite ennoies theorias grafon
• Analytiko gia aples periptoseis - enas vasikos agent apaite perissotero boilerplate apo alla frameworks
• I aposfalmotosi roon grafon mporei na einai dyskoli choris to LangSmith

Timologisi

Open-source (MIT). To LangSmith (diacheirizomeni platforma paratirisimotitas) echei epiploches vathmides gia paragoigki parakolouthisi.

CrewAI: O dimiourgos omadas

To CrewAI chrisimopoiei mia anthropini metafora: synthetete ena pliroma apo ekseidikeymenous agents, kathenas me enan rolo, enan stocho kai mia istoria. Oi agents synergaaontai se ergasies chrisimopoiontas ergaleia, syntonismenoi apo mia diadikasia (seiariaki, ierarchiki i synthesigmatiki).

Skeftite to san na prosthenete mia omada opou kathe melos echei sygekkrimeno titlo kai eidikotita.

Vasikes ennoies

• Agent: mia persona me rolo, stocho, istoria kai ergaleia
• Task: mia anathesi me perigrafi, anammenomeno apotelesma kai anatetheimeno agent
• Crew: mia omada agent pou ergaazontai mazi
• Process: stratigiki ektelesis (seiariaki, ierarchiki, synthesigmatiki)
• Flow: epipedo orchestration vasismeno se gegonota gia ti syndesi pollalon pliromaton

Paradeigma kodika

from crewai import Agent, Task, Crew, Process

researcher = Agent(
    role="Senior Research Analyst",
    goal="Find comprehensive data about the given topic",
    backstory="You have 10 years of experience in technology research. "
              "You are thorough and always verify facts from multiple sources.",
    tools=[web_search_tool],
    verbose=True,
)

writer = Agent(
    role="Technical Writer",
    goal="Create clear, engaging technical content",
    backstory="You write for a developer audience. "
              "Your articles are practical and include code examples.",
    tools=[file_tool],
    verbose=True,
)

research_task = Task(
    description="Research the latest developments in WebAssembly in 2026. "
                "Focus on WASI, Component Model, and production use cases.",
    expected_output="A structured research document with key findings and sources.",
    agent=researcher,
)

writing_task = Task(
    description="Write a blog post based on the research. "
                "Include code examples and Mermaid diagrams.",
    expected_output="A complete blog post in Markdown format.",
    agent=writer,
    context=[research_task],  # Writer receives researcher's output
)

crew = Crew(
    agents=[researcher, writer],
    tasks=[research_task, writing_task],
    process=Process.sequential,
    verbose=True,
)

result = crew.kickoff()
print(result.raw)

Dynata simeia

• Diaisthitiki afairesi vasismeni se rolous - eykoli stin katanoisi
• Pano apo 100 ensoomatomenees entaxis ergaleion
• Koinochroni mnimi metaxy ton agents (vrachyprothesmi, makroprthesmi, onotitas)
• Megaliteri koinotita (~40k GitHub stars)
• Ierarchiki diadikasia me enan agent "diacheiristi" pou anathete kai epikyroni

Adynamies

• Ligotero leptoereis elegchos apo to LangGraph - orizete rolous, ochi akriveis diadirmes ektelesis
• I ierarchiki diadikasia mporei na einai aprobleepti otan oi agents diafounoun
• I aposfalmotosi synomilion pollalon agents einai dyskoloteri apo roes enos agent

Timologisi

Open-source pyriinas (dorean). CrewAI Platform: 99 $/mina (Teams) eos 120 chil. $/etos (Enterprise). I timologisi vasizetai se energa pliromata kai miniaia ekteleseis.

OpenAI Agents SDK: O router

To OpenAI Agents SDK (pnevmatikos diadochos tou Swarm) epikentroonetai stis paradoseis - oi agents metaferoun synomilies se allous ekseidikeymenous agents. Einai to pio minimalistiko framework: agents, ergaleia, paradoseis kai guardrails. Aftoo einai ola.

Vasikes ennoies

• Agent: modelo + odigies + ergaleia + paradoseis
• Handoff: mia metafora se allon agent (montelopoiimeni os ergaleio pou to LLM mporei na kalesei)
• Guardrail: epikyrosi eisodou/exodou pou ekteleitai parallila me ton agent
• Runner: ektelei ti vrogcho tou agent
• Tracing: ensoomatommeni paratirisimotita gia oles tis kliseis LLM, chrisis ergaleion kai paradoseis

Paradeigma kodika

from agents import Agent, Runner, handoff, InputGuardrail, GuardrailFunctionOutput
from pydantic import BaseModel

class SafetyCheck(BaseModel):
    is_safe: bool
    reason: str

async def content_safety(ctx, agent, input_text):
    result = await Runner.run(
        Agent(name="Safety", instructions="Check if input is safe. No PII."),
        input_text,
        context=ctx,
    )
    output = SafetyCheck.model_validate_json(result.final_output)
    return GuardrailFunctionOutput(
        output_info=output, tripwire_triggered=not output.is_safe
    )

billing_agent = Agent(
    name="Billing Agent",
    instructions="You handle billing inquiries. Be precise with numbers.",
    tools=[lookup_invoice, process_payment],
)

refund_agent = Agent(
    name="Refund Agent",
    instructions="You process refund requests. Always verify the order first.",
    tools=[lookup_order, issue_refund],
)

triage_agent = Agent(
    name="Triage Agent",
    instructions="Route the customer to the right specialist. "
                 "Ask clarifying questions if needed.",
    handoffs=[billing_agent, refund_agent],
    input_guardrails=[InputGuardrail(guardrail_function=content_safety)],
)

result = await Runner.run(triage_agent, "I need a refund for order #4521")
print(result.final_output)
# The triage agent routes to refund_agent, which processes the refund

Dynata simeia

• Katharo montelo paradosis - fysiko gia workflows routing/triaz
• Ta guardrails ektelountai parallila me tin ektelesi (fail-fast, mi-mplokariistika)
• Ensoomatommeno panel tracing gia aposfalmotosi
• Para to onoma, ypostiri modela ektos OpenAI
• Elachisti afairesi - eykolo na katanoithei kai na epektathei

Adynamies

• Ligotero orimi diacheirisi katastasis apo to LangGraph
• Kamia ensoomatommeni monimotita i checkpointing
• To oikosystima ergaleion triton einai mikrotero
• I schedkiasi me epikentro tis paradoseis mporei na min tairiazei se kathe architektoniki

Timologisi

Open-source (MIT). Plirnete ana token gia opoiodipote modelo chrisimooieitee.

Claude Agent SDK: O programmatistis

To Claude Agent SDK akolouthei mia diaforetiki proseggisi: anti na orizete workflows i rolous, dinete ston agent ena set ergaleion kai ton afinete na vrei monos tou pos na oloklirosi tin ergasia. Chrisimopoiei tin idia aftonomi vrogcho pou trofodioti to Claude Code - diavase, drase, epiviose, epanalav.

Vasikes ennoies

• query(): to kyrio simeio eisodou pou xekina ti vrogcho tou agent
• Ensoomatomena ergaleia: Read, Write, Edit, Bash, Glob, Grep, WebSearch, WebFetch
• Prosarmosmena ergaleia meso MCP: orismos ergaleion os in-process MCP servers
• Sub-agents: ekseidikeymenoi agents stous opoious o gonikos mporei na anathesi
• Sessions: diatirisi plaissiou se polles allilepidrasis

Paradeigma kodika

import { tool, createSdkMcpServer, query } from "@anthropic-ai/claude-agent-sdk";
import { z } from "zod";

const searchDocs = tool(
  "search_docs",
  "Search the internal documentation for relevant information",
  { query: z.string().describe("Search query") },
  async ({ query }) => {
    const results = await vectorStore.similaritySearch(query, 5);
    return {
      content: [{ type: "text", text: results.map(r => r.pageContent).join("\n\n") }],
    };
  }
);

const docsServer = createSdkMcpServer({
  name: "docs",
  version: "1.0.0",
  tools: [searchDocs],
});

for await (const message of query({
  prompt: "Find how authentication works in our system and write a summary",
  options: {
    mcpServers: { docs: docsServer },
    allowedTools: ["Read", "Glob", "Grep", "mcp__docs__search_docs"],
  },
})) {
  if (message.type === "result" && message.subtype === "success") {
    console.log(message.result);
  }
}

Dynata simeia

• Protis taxis entaxi MCP - syndethite me opoiodipote oikosystima MCP servers
• Ensoomatomena ergaleia gia leitourgies archion, terminal kai prosvasi sto diadiktyo
• Aftomati sympyknosi plaisiou gia megales vaseis kodika
• Paralliloi sub-agents gia polyplokes ergasies
• Idia michani me to Claude Code - dokimasmeni se pragmatikes roes ergasias anaptixi

Adynamies

• Mono modela Claude - kamia ypostirixi pollon parochon
• Neotero framework me mikroteri koinotita
• Apaite periballon Node.js akomi kai gia to Python SDK
• Ligoteros safis elegchos workflow se sygkrisi me to LangGraph

Timologisi

Open-source. Kanoniki timi token Claude API. Managed Agents (filoxenoumeni ekdosi): 0,08 $ ana ora synedriias prostheta apo ta kosti token.

Pote na epilexete poio

Epilexte LangGraph an:

• Chriazeste akrivii elegcho se kathe vima tis rois ergasias
• I periptosi chrisis sas perilamvanei polyploki synthiki logiki kai vrogchous
• Thelete ensoomatommeni monimotita kai checkpoints human-in-the-loop
• Chriazeste na chrisimopoiisete pollous parochous LLM stin idia roi ergasias

Epilexte CrewAI an:

• Thelete mia diaisthitiki afairesi vasismeni se rolous
• I ergasia sas perilamvanei pollous agents me diaforetikes eidikotites
• Chriazeste oi agents na synergaaontai kai na pernnoun plaisio metaxy tous
• Ektimate ti megaliteri koinotita kai tis perisoteres ensoomatommenes entaxis

Epilexte OpenAI Agents SDK an:

• To kyrio montelo sas einai i drromologisi synomilion se eidikous
• Chriazeste guardrails pou epikyrounoun eisodo/exodo parallila
• Thelete tin aploysteni dynati afairesi me elachisto boilerplate
• To ensoomatommeno tracing kai i paratirisimotita einai simantika

Epilexte Claude Agent SDK an:

• Oi agents sas prepei na diavazoun, grafoun kai ekteloun kodika
• Thelete protis taxis entaxi me MCP servers
• Chriazeste aftonomous agents pou epanalamvanoun kai aftodiiorthonontai
• Idi chrisimopoieite to Claude kai thelete tin vathyteri entaxi

Mporun na syndyastoun ta frameworks?

Nai. Ena synitho montelo einai i chrisi enos framework gia tin orchestration kai enos allou gia tos monadikous agents:

• LangGraph gia to synoliko grafo rois ergasias
• CrewAI gia ena sykekkrimeno komvo pou apaite synergasia pollalon agents
• Claude Agent SDK gia ypo-ergasies schetikes me kodika meso MCP
• OpenAI Agents SDK gia triaz kai routing pros tous pelates

Ta frameworks den einai amoimaia apokleiomena. Chrisimopoiiste oti tairiazei se kathe meros tou systimatos sas.

Symperasma

Kathe framework kanei mia safii epilogi:

• LangGraph veltiopolitei gia elegcho - eseis apofasizete gia kathe metavasi
• CrewAI veltiopolitei gia synergasia - oi agents ergaazontai os omada
• OpenAI Agents SDK veltiopolitei gia aplotita - elachisti afairesi, kathares paradoseis
• Claude Agent SDK veltiopolitei gia aftonomia - doste tou ergaleia kai afiste ton na douleepsi

I sosti epiloyi exartatai apo ti roi ergasias sas, tin omada sas kai to yparcho stack sas. Dialexte afto pou tairiazei stin kyria periptosi chrisis sas, mathete to kala kai travaaxte ta alla otan ftasete sto dynato tous simeio.