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Weights & Biases Release notes from CoreWeave

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Weights & Biases 0.31.0

Notable Changes - The default API endpoint is now CoreWeave Forge at https://api.forge.coreweave.com, and run links point to https://forge.coreweave.com/wandb. Existing API keys stored for api.wandb.ai keep working without logging in again. Added - Python 3.15 is now supported (@dmitryduev in ) - wandb.init(resume="must") now works for offline runs.

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Weights & Biases 0.30.0

Notable Changes wandb.InternalApi , the wandb.PublicApi and wandb.apis.PublicApi aliases, and the wandb.apis.internal and wandb.sdk.internal.internal_api modules have been removed. Use wandb.Api() instead. wandb.api and wandb.ensure_configured() are deprecated.

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Weights & Biases 0.29.0

Notable Changes Removed the deprecated start_method setting that already had no effect. The .length property on paginated objects (e.g. Api.runs() , Api.sweeps() , run.files() ) has been removed. Use len(...) instead. wandb.Video() now requires the format argument when initializing from a numpy array or raw bytes.

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Weights & Biases 0.28.0

Notable Changes This version drops compatibility with server versions older than 0.65.0. Added High-resolution image rendering in terminals supporting the Kitty protocol with ANSI fallback in the W&B LEET TUI media pane ( wandb leet command) ( @dmitryduev in #11806 ) Synced scrubbing in the W&B LEET media pane: press l to link scrubbing, then the scrub keys...

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Weights & Biases 0.27.0

Notable Changes This version drops support for Python 3.9 and Pydantic v1. Pydantic v2.6 or newer is now required. Added The stop_on_fatal_error setting to stop a run (using stop_fn ) after a fatal error that prevents it from uploading metrics ( @timoffex in #11774 ) New wandb.sandbox package and the wandb beta sandbox cli for using wandb sandbox (...

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Weights & Biases 0.26.0

Notable Changes This version drops compatibility with server versions older than 0.63.0 (for Dedicated Cloud and Self-Managed W&B deployments). Added wandb beta core start|stop commands to run a detached wandb-core service and reuse it across multiple processes via the WANDB_SERVICE env var ( @dmitryduev in #11418 ) Run filtering by metadata in multi-run...

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Other CoreWeave products: W&B Weave

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April 3, 2026
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January 8, 2026
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March 14, 2025
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