OpenLIT records 6,028 monthly visits with -18.3% month-over-month growth and Free pricing. Use AI records 8,751,848 monthly visits with -10.2% growth and Free Trial, Paid pricing.
Open-source, OpenTelemetry-native observability and harness engineering for AI agents
One workspace for Claude, GPT, Gemini, Grok and more
| Dimension / Metric | | |
|---|---|---|
| Official Domain | openlit.io | use.ai |
| Pricing Model | Free | Free Trial, Paid |
| Monthly Visits | 6.03K (6,028) | 8.75M (8,751,848) |
| MoM Traffic Delta | -1.35K (-18.3%) | -999.07K (-10.2%) |
| Primary Market & Share | 🇺🇸 United States (53.6%) | 🇺🇸 United States (19.9%) |
| Direct Visits / mo | 2.38K | 720.34K |
| User Rating | 4.7 | 4.2 |
| Supported Platforms | Website | Website |
Open-source, OpenTelemetry-native observability and harness engineering for AI agents
Capture OpenTelemetry traces and metrics for every LLM call, tool invocation, retrieval, and agent step, and filter them by user, session, cost, latency, or custom metadata.
Score production traffic or experiments with LLM-as-a-judge, heuristic checks, or human review so you can measure accuracy, relevance, and safety over time.
Manage and version prompts in Prompt Hub, then deploy, roll back, and update prompts without shipping new application code.
Store and rotate OpenAI, Anthropic, and other LLM API keys outside your codebase with an encrypted, rotating secrets vault.
One workspace for Claude, GPT, Gemini, Grok and more
Switch between Claude, GPT, Gemini, Grok, DeepSeek, Kimi, Qwen, GLM and Meta Muse models without juggling separate subscriptions.
Start a conversation on a fast model and hand the same thread to a stronger reasoning model when the task gets harder, keeping context intact.
Run multi-source research that reads up to 200 sources on Pro and up to 1,000 on Max, returning structured reports with references.
Create PDFs, slide decks and spreadsheets directly from a prompt, and generate images with leading models such as Nano Banana and GPT Image.
SpecialistDelivers industry-leading reasoning and multimodal capabilities in a single model, but lacks multi-model switching options.
SpecialistDelivers industry-leading reasoning and multimodal capabilities in a single model, but lacks multi-model switching options.
SpecialistExcels at nuanced writing and document analysis using Anthropic models, but does not aggregate alternative frontier providers.
SpecialistExcels at nuanced writing and document analysis using Anthropic models, but does not aggregate alternative frontier providers.
SpecialistProvides high-efficiency open-weight reasoning models at low cost, but lacks a multi-model aggregator workspace interface.
SpecialistProvides high-efficiency open-weight reasoning models at low cost, but lacks a multi-model aggregator workspace interface.
SpecialistFocuses heavily on real-time web search with citations, but offers less flexibility for multi-model prompt comparison.
SpecialistFocuses heavily on real-time web search with citations, but offers less flexibility for multi-model prompt comparison.
Free / Open-sourceRun and build with open AI models locally or in the cloud
Free / Open-sourceRun and build with open AI models locally or in the cloud
Aggregates diverse frontier models and custom bots into one chat app, but lacks desktop workspace customization.
Aggregates diverse frontier models and custom bots into one chat app, but lacks desktop workspace customization.
Provides multi-model desktop and web workspaces, but requires configuring your own API keys for full flexibility.
Provides multi-model desktop and web workspaces, but requires configuring your own API keys for full flexibility.
SpecialistIntegrates multi-model AI directly into your browser workflow, trading deep multi-model chats for contextual page helpers.
SpecialistIntegrates multi-model AI directly into your browser workflow, trading deep multi-model chats for contextual page helpers.
Aggregates major LLMs under a single subscription, but provides fewer specialized creative generation tools.
Aggregates major LLMs under a single subscription, but provides fewer specialized creative generation tools.
Free / Open-sourceOffers a powerful self-hosted open-source interface for multiple models, requiring technical setup unlike managed web aggregators.
Free / Open-sourceOffers a powerful self-hosted open-source interface for multiple models, requiring technical setup unlike managed web aggregators.
Free / Open-sourceOne open-source AI gateway for 100+ LLM providers
Offers unified access to various AI models, though with fewer advanced document generation tools than Use AI.
Offers unified access to various AI models, though with fewer advanced document generation tools than Use AI.
