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📖 The AI Tool Bible

AI prompt management

Editorial picks for "prompt management tool".

48 tools

All Evaluation
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Braintrust

Featured
Evaluation · Platform (any LLM)
8.9

Eval, monitor, and improve AI products end-to-end.

Freemium· Starter: $0 · Pro: $249 · Enterprise: Custom pricingevalsmonitoring
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AWS Bedrock

Agents · Multi-model: Anthropic Claude, Meta Llama, Mistral, Cohere, AI21, Amazon Nova/Titan, DeepSeek, Stability, OpenAI GPT
8.6

Build and scale generative AI applications with foundation models

Paid· Standard: Contact sales · Flex: Contact sales · Priority: Contact sales · Reserved: Contact salesEnterprise RAG chatbot over private documentsMulti-step tool-using agents via AgentCore
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Msty

Writing · Multi-model (Ollama, Claude, GPT, Gemini, others)
8.2

Privacy-first desktop AI workspace that runs local and cloud models side by side.

Freemium· Free: $0 · Aurum: ? · Aurum Lifetime: ? · Enterprise & Teams: Talk to uslocal-llm-chatmulti-model-comparison
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Athina AI

Evaluation · Multi-model
8.1

Collaborative LLM evaluation and observability platform for teams shipping AI features to production.

Freemium· Starter free (10k logs/mo); Pro & Enterprise customllm-evaluationprompt-management
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HoneyHive

Evaluation · Multi-model
8.1

OpenTelemetry-native observability and evaluation platform for LLM agents in production.

Freemium· Free tier available; paid/enterprise tiers via salesagent-observabilityllm-evaluation
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MLflow

Evaluation · Multi-model
8.1

Open-source platform for tracking, evaluating, and deploying ML models and LLM applications.

Free· Free and open source (Apache 2.0); managed offering via Databricksllm-evaluationexperiment-tracking
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W&B Weave

Evaluation · Multi-model
8.1

Production observability, tracing, and evaluation for LLM and agent systems from the Weights & Biases stack.

Freemium· Free tier available; paid and enterprise plans via W&Bllm-tracingagent-observability
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16x Prompt

Coding · Multi-model (BYO key)
8.0

Desktop prompt-composer for AI coding that bundles repo context, diffs, and multi-model comparison.

Freemium· Free: 10 prompts/day; paid individual and team licensesprompt-engineeringai-pair-programming
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PromptLayer

Evaluation · Platform (any LLM)
7.9

Lightweight prompt logging + management for OpenAI/Claude apps.

Freemium· Free: $0 · Pro: $49 · Team: $500 · Enterprise: Customprompt loggingversioning
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AgentMemory

Agents · Multi-model (Claude, Gemini, MiniMax, OpenRouter)
7.3

Open-source persistent memory runtime for AI coding agents, with hybrid retrieval and zero external dependencies.

Free· Free, open-source (Apache 2.0); bring your own LLM API keyagent-memorycoding-agents
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Langfuse

Evaluation · Model-agnostic
7.3

Open-source LLM observability, prompt management, and evaluation in one platform.

Freemium· Free self-host & Hobby tier; Core $29/mo, Pro $199/mo, Enterprise $2,499/mollm-observabilityprompt-management
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Coze Studio

Agents · Multi-model
7.2

Self-hostable visual AI agent development platform from ByteDance with workflows, RAG, and plugin tooling.

Free· Free, Apache 2.0; self-hostedai-agentsworkflow-automation
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Nexent

Agents · Multi-model (OpenAI-compatible: any LLM/Embedding/VLM/STT/TTS)
7.2

Open-source, zero-code platform for spinning up production-grade AI agents from a single natural-language prompt.

Free· Free, open-source (MIT); self-hosted infra + model API costs applymulti-agent-orchestrationzero-code-agents
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Promptfoo

Evaluation · Multi-model
7.2

Open-source eval and red-teaming framework for LLM apps, prompts, and RAG pipelines.

Freemium· Community: Free · Enterprise: Custom · On-Premise: Customllm-evalsred-teaming
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Taskade

Agents · Multi-model (Claude, GPT, Gemini)
7.2

AI-powered workspace that turns natural-language prompts into apps, agents, and automated workflows.

Freemium· Free tier; paid plans for custom domains, more integrations, and teamsai-agentsworkflow-automation
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Arthur

Evaluation · Multi-model
7.1

Open-source toolkit for testing, tracing, and monitoring production AI agents.

Freemium· Free: $0/mo · Premium: $60/mo · Enterprise: Customagent-evaluationprompt-management
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Fiddler AI

Evaluation · Fiddler Centor (proprietary evaluators)
7.1

Enterprise AI observability and guardrails platform for monitoring agents, LLMs, and ML models in production.

Enterprise· Free: Free · Developer: $0.002 per trace · Enterprise: Contact salesllm-observabilityagent-monitoring
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Portkey

Agents · Multi-model
7.1

Production LLM gateway with observability, guardrails, and prompt management for teams shipping AI in anger.

Freemium· Developer: Free Forever · Production: $49/month · Enterprise: Custom Pricingllm-gatewayobservability
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Prompt Foundry

Evaluation · OpenAI + Anthropic (multi-model)
7.1

Prompt management and side-by-side LLM evaluation for OpenAI and Anthropic models.

Freemium· Free tier (10 prompts, 500 evals/mo); Pro $15/user/mo; Enterprise customprompt-managementmodel-comparison
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StarOps

Coding · Multi-model
7.1

AI-native platform engineering engine that provisions and manages cloud infrastructure from natural-language prompts.

Freemium· Free tier; paid from $199/mo; custom enterpriseinfrastructure-automationkubernetes-management
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RowSpeak

Agents · Gemini
7.0

AI spreadsheet analyst that turns messy Excel, CSV, and PDF tables into dashboards and management-ready reports.

Freemium· Essential: $8.3/mo · Professional: $24.9/mo · Premium: $49.9/mospreadsheet-analysisdata-visualization
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Superpower ChatGPT

Agents · GPT (via ChatGPT UI)
7.0

Chrome extension that bolts folders, prompt libraries, and bulk export onto the ChatGPT web UI.

Freemium· Basic: $10 · Pro: $20 · Enterprise: Contact saleschatgpt-organizationprompt-management
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Chatbot UI

Writing · Multi-model (OpenAI, Anthropic, Google, Mistral, Meta, etc.)
6.9

Open-source unified chat interface for 80+ frontier AI models.

Freemium· Free tier on hosted app; self-host is free (bring your own API keys)multi-model chatprompt management
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Izlo

Agents · Model-agnostic
6.9

Prompt management platform with version control, collaboration, and an API for production deployment.

Paid· Solo: $20 · Pro: $25 per user/month · Enterprise: $39 per user/monthprompt-managementversion-control
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TreeScale

Agents · Multi-model
6.9

No-code platform that wraps LLM prompt chains into deployable, integration-ready APIs.

Freemium· Free tier to publish first LLM app; paid tiers on topllm-api-deploymentprompt-chaining
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Yomu AI

Writing · Multi-model (GPT-4o/5, Claude Sonnet/Opus, Gemini Flash)
6.9

AI writing assistant built specifically for students and academic researchers.

Freemium· Free tools; Pro $11/mo, Ultra $18/mo (annual); $499 lifetimeacademic-writingessay-drafting
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Azure MCP Server

MCP Servers

Official Microsoft MCP server that exposes 40+ Azure services to AI agents under the developer's own Entra ID credentials.

Free· Server is free and MIT-licensed. Azure resource usage is billed separately at standard Azure rates based on whatever services the agent queries or mutates.Natural-language Azure resource inventoryLog Analytics and Kusto (KQL) querying from an agent
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ComfyUI

Image Generation · Model-agnostic; runs Stable Diffusion, SDXL, SD3, Flux, HunyuanVideo, LTX-Video, Wan, Mochi and most open-weight diffusion checkpoints

Professional Control of Visual AI

Freemium· STANDARD: $20/month · CREATOR: $35/month · PRO: $100/month · TEAM: $700/monthStable Diffusion and Flux image generationControlNet-guided composition
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Fabric

Agents · Model-agnostic: OpenAI GPT-4o/GPT-4.1, Anthropic Claude (incl. Opus 4.7), Google Gemini, Azure OpenAI, Bedrock, Vertex AI, plus local Ollama and LM Studio models.

An open-source framework for augmenting humans with AI, one composable prompt at a time.

Free· Free and open-source (MIT). Users bring their own API keys and pay each LLM provider directly; local models via Ollama or LM Studio incur no per-token cost.YouTube video summarisation and wisdom extractionLong-form article and PDF summarisation
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Google Agent Development Kit (ADK)

Agents · Gemini (default) plus Claude, GPT-4/5, Llama, and other providers via LiteLLM

Google's open-source framework for building, evaluating, and deploying production AI agents

Free· Framework itself is free and open-source (Apache 2.0). Costs come from the underlying model provider (e.g. Gemini API / Vertex AI usage) and any hosting infrastructure (Cloud Run, GKE, Agent Engine).Multi-agent research assistantCustomer support triage agent
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Home Assistant MCP

MCP Servers

Open-source MCP server that lets any LLM control and observe a Home Assistant smart home in real time.

Free· Free and open source (Apache 2.0). Self-hosted; only cost is your own Home Assistant instance and the LLM client you connect to it.Conversational smart-home control from Claude Desktop or CursorLLM-driven Home Assistant automations
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ModelFuzz

Evaluation · Model-agnostic; works with any OpenAI-compatible endpoint (Qwen 2.5 used in official examples).

Open-source red-teaming and execution-layer defense for AI agents against prompt injection.

Freemium· Free / open-source (MIT) via pip. Hosted dashboard with centralized policies, audit logs and continuous scanning coming soon via waitlist (pricing not yet public).Red-teaming OpenAI-compatible agent endpointsBlocking indirect prompt injection via retrieved documents
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OpenClaude

Coding · Model-agnostic — routes to OpenAI, Gemini, Grok, Codex, Ollama, LM Studio, GitHub Models, DeepSeek and 200+ others

Open-source, model-agnostic terminal coding agent

Free· Free and open source; you pay only for whichever underlying model API you configure (or $0 with local Ollama / LM Studio).Terminal-based pair programmingAutomated refactors across a repository
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Open WebUI

Agents · Backend-agnostic: any Ollama, llama.cpp, vLLM, or OpenAI-compatible API (OpenAI GPT, Anthropic Claude, Llama 3.x, Qwen, Mistral, Gemma, etc.)

Self-hosted, extensible AI chat platform that runs on your infrastructure

Freemium· Free (self-hosted, MIT-style community license via pip/Docker) / Enterprise: custom pricing for SSO, RBAC, audit logs, air-gapped deployment, data-residency guaranteesSelf-hosted ChatGPT alternative for a teamPrivate RAG chatbot over internal documents
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Suno

Featured
Audio · Suno v4
9.2

Text-to-song AI — full vocal tracks from a prompt.

Freemium· Free Plan: $0 · Pro Plan: $8 · Premier Plan: $24songwritingdemos
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Flux

Featured
Image Generation · Flux.1 [schnell / dev / pro]
9.0

Black Forest Labs' open-weights image model — rivals Midjourney quality.

Freemium· FLUX.2 [max]: $0.07 · FLUX.2 [pro]: $0.03 · FLUX.2 [klein] 9B: $0.015 · FLUX.2 [klein] 4B: $0.014 · FLUX.2 [flex]: $0.05open sourceself-hosted
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Runway

Featured
Video · Gen-4
9.0

Pro-grade AI video editor and Gen-4 generation.

Paid· $15/mo Standard; $35/mo Pro; $95/mo Unlimitedshort filmVFX
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Replit Agent

Featured
Coding · Multi-model (Claude / GPT configurable)
8.7

Build & deploy a full app from a single prompt.

Freemium· Basic: $20 · Pro: $50 · Enterprise: Contact salesprototypesinternal tools
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Stable Diffusion

Image Generation · SD 3.5 / SDXL
8.8

Open-source image generation — run anywhere, fine-tune anything.

Free· Free open weights; optional Stability APIlocalfine-tuning
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Ernie Bot

Agents · Baidu ERNIE 4.0 / ERNIE X1 / ERNIE Turbo (in-house)
8.7

Baidu's Mandarin-first ChatGPT rival, powered by the ERNIE model family

Freemium· Free tier for Ernie 3.5 access; Ernie 4.0 and premium features require a paid subscription (approximately CNY 59.9/month for individual plans); enterprise API pricing via Baidu AI Cloud Qianfan platform is metered per 1K tokens.Mandarin content writing and marketing copyChinese-language document Q&A and summarisation
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LangSmith

Evaluation · Platform (any LLM)
8.7

LangChain's eval + observability platform.

Freemium· Developer: $0 · Plus: $39 · Enterprise: Custom pricingLLM tracingevals
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Nano Banana (Gemini Image)

Image Generation · Gemini 3 Pro Image (Nano Banana Pro), Gemini 3.1 Flash Image (Nano Banana 2), Gemini 3.1 Flash-Lite Image (Nano Banana 2 Lite)
8.7

Google DeepMind's Gemini-powered image generation and conversational editing model family

Paid· Consumer access via Gemini app (free tier + Google AI Pro/Ultra subscriptions). API usage-based: Nano Banana Pro (Gemini 3 Pro Image) ~$0.134/image at 1K-2K, ~$0.24/image at 4K; Nano Banana 2 (Gemini 3.1 Flash Image) ~$0.067/image at 1K, up to ~$0.151 at higher resolutions; Nano Banana 2 Lite priced lower for high-throughput use. Batch API roughly 50% off. Enterprise pricing via Gemini Enterprise Agent Platform and Vertex AI.Marketing hero imagesProduct mockups and packaging visualisations
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Snowflake Cortex

RAG · Anthropic Claude, Meta Llama, Mistral Large 2, Snowflake Arctic
8.7

Generative AI and RAG built into the Snowflake data cloud

Enterprise· Standard: Contact sales · Enterprise: Contact sales · Business Critical: Contact sales · Virtual Private Snowflake: Contact salesEnterprise RAG chatbot over governed dataNatural-language SQL for business analysts
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Claude Agent SDK

Agents · Claude Opus / Sonnet
8.6

Anthropic's official SDK for building autonomous Claude agents.

Free· Free SDK; API usage billed at Claude ratesClaude agentstool use
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IBM watsonx

Agents · IBM Granite (3.x, Code, Time Series), Meta Llama 3.x, Mistral, plus other curated open models
8.6

Enterprise AI platform for building, deploying, and governing models and agents

Enterprise· watsonx.ai has a free tier on IBM Cloud with limited tokens; paid usage is metered per 1M tokens by model family (Granite, Llama, Mistral, etc.). watsonx.governance and watsonx.data are quoted per environment. Enterprise deals via IBM sales; on-prem/Cloud Pak for Data is separately licensed.Enterprise RAG chatbot over private documentsCustomer service agents with guardrails
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Canva Magic Studio

Image Generation · Multi-model: partners including OpenAI (Magic Write historically on GPT models), Google Imagen and Runway for image/video, plus Canva's in-house design and layout models
8.5

Canva's all-in-one AI creative suite for design, image, video, copy, and presentations

Freemium· Free: Free · Pro: €11.67 · Business: €14.17 · Enterprise: Contact salesSocial media post generationShort-form video ads
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Glean

Agents · Model-agnostic: routes across 35+ LLMs including GPT-4o, Claude 3.5/4 Sonnet, Gemini 1.5/2, Llama 3, Mistral, plus Glean in-house models
8.5

Work AI platform that unifies enterprise knowledge, search, and agents

Enterprise· Enterprise pricing only; commonly reported in the $40-50/user/month range with a floor typically starting around 100 seats. No public self-serve tier. Contact sales for a quote.Enterprise search across Slack, Drive, Confluence and JiraCompany-wide AI assistant with citations
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Kittl

Image Generation · Multi-model: ByteDance Seedream 3-4.5, Ideogram 2A/3, Google Imagen 4 + Nano Banana, OpenAI DALL-E 3 / ChatGPT Image, Black Forest Labs Flux
8.5

AI-first design platform combining multi-model image and vector generation with a full browser editor

Freemium· Free: Free · Pro: $19 · Expert: $29 · Business: $59T-shirt and merch graphic designBadge and vintage-style logo creation