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Opik Security Incident: October 2026
No customer data, accounts, or API keys were accessed. On October 26, 2026, Comet contained a security incident affecting Opik…
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Introducing Opik’s Generative Dashboard Builder
At Comet, we’ve seen firsthand how teams in finance, tech, e-commerce, and beyond use the Opik platform to track critical…
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Train your own decision model
Decision models drew wide attention in September, when TypeSafe AI launched Jev, a model that returns probabilities over a fixed…
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Jev vs. LLM-as-a-Judge for AI Evals
A model that answers yes/no questions instead of writing text came out 3.5× cheaper and 3.8× faster than our gpt-4o-mini…
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Comet Extends Agent Observability and Evaluation to Nebius AI Cloud
Comet’s Opik platform is now listed in Nebius AI Cloud Applications, bringing agent observability, evaluation, and the full Comet AI…
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Capturing a 400-Turn Claude Code Session in a Single Image
We ran a small model over thousands of Claude Code session and discovered how people really use coding agents. Comet…
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Prompt Management for AI Agents: The Best Tools Compared (2026)
Despite how often prompts change once an agent is live, most teams don’t have a real prompt management process. Somewhere…
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Export TrueFoundry AI Gateway traces to Opik with OpenTelemetry
When an LLM call is slow, expensive, or wrong, you want to see the whole request: the prompt, the model,…
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UX Without a UI: Notes from Researching Terminal UX for Opik MCP
The way developers interact with products is changing, and opening your app’s dashboard is no longer the obvious entry point.…
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Diffusion Language Models, From Scratch to Production
“Language model” used to be a very general term for statistical models trained on language tasks. It included everything from…
Comet Blog
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Understanding Your Claude Code Spend: What’s Actually Driving the Cost
I’ve been spending time looking at how teams are actually using Claude Code, and one thing keeps coming up: most…
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