Respan (formerly Keywords AI) vs Stellaris AI
Compare Respan (formerly Keywords AI) vs Stellaris AI and see which AI Large Language Model (LLM) tool is better when we compare features, reviews, pricing, alternatives, upvotes, etc.
Which one is better? Respan (formerly Keywords AI) or Stellaris AI?
When we compare Respan (formerly Keywords AI) with Stellaris AI, which are both AI-powered large language model (llm) tools, There's no clear winner in terms of upvotes, as both tools have received the same number. Your vote matters! Help us decide the winner among aitools.fyi users by casting your vote.
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Respan (formerly Keywords AI)

What is Respan (formerly Keywords AI)?
Respan is an LLM engineering platform for teams shipping production AI agents and applications. Route model traffic through one gateway, trace every call in detail, run evals on offline datasets and live traffic, and monitor cost, latency, and errors from a single dashboard.
The product grew out of Keywords AI, a Y Combinator Winter 2024 company founded by engineers from the University of Illinois. What started as LLM routing expanded into full observability after customers asked for visibility into how agents behaved in production. Respan now positions itself around the loop from tracing to evaluation to iteration.
It fits ML engineers, platform teams, and AI product builders who need gateway failover, prompt version testing, production quality scoring, and spend controls without stitching together separate tools. Customers cited on the site include teams at Retell AI, Mem0, Lovable, and Gumloop.
Stellaris AI

What is Stellaris AI?
Join the forefront of AI technology with Stellaris AI's mission to create groundbreaking Native-Safe Large Language Models. At Stellaris AI, we prioritize safety and utility in our advanced SGPT-2.5 models, designed for general-purpose applications. We invite you to be part of this innovative journey by joining our waitlist. Our commitment to cutting-edge AI development is reflected in our dedication to native safety, ensuring our models provide reliable and secure performance across various domains. Stellaris AI is shaping the future of digital intelligence, and by joining us, you'll have early access to the SGPT-2.5, a product that promises to revolutionize the way we interact with technology. Don't miss the chance to collaborate with a community of forward-thinkers — submit your interest, and become a part of AI's evolution today.
Respan (formerly Keywords AI) Upvotes
Stellaris AI Upvotes
Respan (formerly Keywords AI) Top Features
One endpoint reaches 1,000+ models; switch providers by changing a single model name
Automatic fallbacks move to the next model when one errors or rate-limits
Response caching serves repeat prompts instantly and cuts cost on duplicates
Budgets and rate limits per API key, customer, or org with warn and block thresholds
Trace trees capture every LLM call, tool run, retrieval, and agent turn with cost and latency
Evaluators combine LLM judges, code checks, and human review into one weighted score
Alerts reach Slack, email, or webhooks when cost, errors, latency, or tokens cross limits
Stellaris AI Top Features
Native Safety: Provides reliable and secure performance for AI applications.
General Purpose: Designed to be versatile across a wide range of domains.
Innovation: At the cutting edge of Large Language Model development.
Community: Join a forward-thinking community invested in AI progress.
Early Access: Opportunity to access the advanced SGPT-2.5 model before general release.
Respan (formerly Keywords AI) Category
- Large Language Model (LLM)
Stellaris AI Category
- Large Language Model (LLM)
Respan (formerly Keywords AI) Pricing Type
- Freemium
Stellaris AI Pricing Type
- Freemium
