Opik 2.2.97 fixes Anthropic max_tokens and tiered storage

Opik, the open-source LLM observability and evaluation platform from Comet, published release 2.2.97 on October 12, 2026, according to its GitHub release page. The release notes list backend, frontend and SDK changes, including an Anthropic max_tokens fix and tiered-storage updates.

Release facts

What changed

• Anthropic max_tokens: the backend now honours max_tokens for Anthropic in chat completions.
• Thread stats: thread stats are counted and placed by their traces' ids.
• Tiered storage: partition metrics now report cold-tier bytes and TTL move backlog, and the Helm chart applies the tiered storage policy and TTL move from a post-sync job.
• Anthropic streams (SDK): the SDK stops draining Anthropic streams after an early exit.
• Tracked-call output (SDK): output set during a tracked call is final and is not merged with the return value.
• Model settings UI: several frontend fixes cover parameter panels, such as temperature up to 2 for the OpenAI and Custom panels, and Optimization Studio settings sent under the API's names.

Questions

Is Opik 2.2.97 open source? The Opik docs say Opik is open source, and the repository's license is reported by the GitHub API as Apache-2.0.

Are there new contributors in this release? Yes. The release notes name @lorenzozanee and @theluckystrike as first-time contributors.

Does Opik work with coding agents? According to the Opik docs, you can install the Opik MCP server to use Claude Code, Cursor, VS Code Copilot, Codex or opencode to read traces, score outputs and run experiments from chat.

See the Opik tool hub, the Agent infra category, and the related launch Cline SDK v0.0.93 for more.