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NovaHaven Tech builds focused SaaS tools for engineering teams. Simple to adopt. Transparent by design.
Costara is an AI/LLM cost observability tool built by NovaHaven Tech. It provides a Python SDK that wraps your existing OpenAI, Anthropic, and Google Gemini API calls to track per-feature cost attribution in real time. Teams use Costara to identify which product feature is responsible for AI spending spikes and set budget alerts before costs exceed monthly limits.
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Sound familiar?
“The indie developer spending $200/month on OpenAI who can't tell which feature is eating the budget.”
“The 5-person startup that got a $3,000 AI bill and couldn't explain it to their investor.”
“The platform team managing 10+ AI features across three providers who needs one dashboard.”
“The CTO who wants budget alerts before the monthly invoice arrives, not after.”
Frequently asked questions
What is Costara?
Costara is an AI/LLM cost observability SaaS built by NovaHaven Tech. It provides a Python SDK that tracks every LLM API call, attributes costs to specific product features using a feature_tag parameter, and alerts teams before budgets are exceeded. It works with OpenAI, Anthropic, and Google Gemini.
How does Costara track AI costs?
Costara works by wrapping your existing LLM API calls with a Python decorator or context manager. Each call is tagged with a feature name (e.g., 'chat_summarizer' or 'doc_search'). Costara captures the model used, token count, computed cost, and timestamp — but never the prompt or response content. Costs are aggregated per feature in a real-time dashboard.
What is per-feature cost attribution?
Per-feature cost attribution means knowing exactly which product feature (like search, summarization, or chatbot) is responsible for each dollar of AI API spending. Costara achieves this through the feature_tag parameter — a label you attach to each LLM call that groups costs by feature in the dashboard.
Is Costara free?
Yes, Costara has a free tier at ₹0/month for indie developers and small projects. Paid plans start at ₹2,499/month (approximately $30 USD) for the Pro tier.
What providers does Costara support?
Costara supports OpenAI (GPT-4, GPT-4o, GPT-3.5), Anthropic (Claude), and Google Gemini. The SDK automatically detects the provider from the API call and applies the correct pricing model.
Who founded NovaHaven Tech?
NovaHaven Tech was founded by Mythili Ramalingam in February 2026. It is an MSME/Udyam registered sole proprietorship based in Coimbatore, Tamil Nadu, India.
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