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Respan (formerly Keywords AI)

C
C tier on AI Agent Observability ToolsScore 6.8 · #19 of 32
Android app
Not listed
Free plan
Yes
Paid plans from
$16.58/mo
Runs on
api, self-hosted, Web
respan.ai
The Respan (formerly Keywords AI) homepage
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Summary

Respan (formerly Keywords AI) is ranked #19 of 32 in AI agent observability tools on Everything Xiaomi. It runs on API, Self-hosted, Web. There is a free plan. A free trial is offered. Paid plans start at $16.58/mo.

Respan (formerly Keywords AI) plans and pricing

All plans
Free Free 100k logs · 1k scores · 5 datasets · 2 evaluators · 5 prompts respan.ai · 4 Oct 2026
Team $199/yr Billed yearly 10k scores · 100k logs · unlimited datasets, evaluators, and prompts · 5 members respan.ai · 4 Oct 2026
Enterprise Not published Custom packages · volume discount · custom SLAs · dedicated support engineer · HIPAA BAA respan.ai · 4 Oct 2026

Compared on AI agent observability tools

Free plan
Yesrespan.ai
Paid from
$199/morespan.ai
Cost tracking
Yesrespan.ai

Facts

Product
Respan describes itself as an AI gateway with built-in observability, evaluations, and security testing.respan.ai · 4 Oct 2026
Gateway
Its OpenAI-compatible gateway routes requests to 1,000+ models through one endpoint.respan.ai · 4 Oct 2026
Reliability
The gateway provides model fallbacks, load balancing, automatic retries, and response caching.respan.ai · 4 Oct 2026
Tracing
Respan captures LLM calls, tool runs, retrievals, and agent turns as spans in a trace with input, output, latency, and cost.respan.ai · 4 Oct 2026
Evaluations
Evaluators can combine LLM judges, deterministic code checks, and human review, and can score sampled production traffic.respan.ai · 4 Oct 2026
Monitoring
The product tracks requests, errors, cost, latency, and tokens, with threshold alerts sent through Slack, email, or webhook.respan.ai · 4 Oct 2026
Integrations
The integrations directory lists 171 integrations, including OpenTelemetry, LangChain, OpenAI, Anthropic, AWS Bedrock, Slack, and PostHog.respan.ai · 4 Oct 2026
Privacy and compliance
The homepage states Respan supports SOC 2, GDPR, and HIPAA, and says a BAA is available for healthcare teams.respan.ai · 4 Oct 2026
Enterprise security
The Enterprise plan lists self-hosted deployment, Google and SAML SSO, HIPAA compliance, and a HIPAA BAA.respan.ai · 4 Oct 2026
Support
The pricing page lists Community Discord for Free, email support for Team, and a dedicated support engineer for Enterprise.respan.ai · 4 Oct 2026
Gateway latency
The gateway quickstart says the gateway may add 50 to 150 ms and may not suit products with strict latency requirements.respan.ai · 4 Oct 2026
Intended users
The About page says Respan helps teams trace workflows, evaluate agent behavior, and improve quality in production, and that startups and enterprise teams use it.respan.ai · 4 Oct 2026
Company background
The About page says Respan, formerly Keywords AI, began at the University of Illinois and joined Y Combinator's Winter 2024 batch.respan.ai · 4 Oct 2026

Best Respan (formerly Keywords AI) alternatives

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Btier PetalTrace #1 7.4 FreeBtier OpenLIT #2 7.2 FreeBtier W&B Weave #3 7.2 $60/moBtier SigNoz #4 7.1 Android $19/moBtier Opik #5 7.0 $19/moCtier Agenta #6 6.9 $29/mo

Where it ranks on Everything Xiaomi

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Sources