Fireworks AI Release notes and new features

Errors identify their source

Before 1.2.27, the sidecar returned HTTP 502 for two failures that weren't server-side: tito_model_malformed_output (unparseable model output) and tito_upstream_error (any sampling exception, including client timeouts and dropped connections). They are replaced by: tito_sdk_parse_error (422): the output couldn't be parsed into an assistant or tool message.

• Errors identify their source
• Failure traces are saved locally
• Image inputs for FiretitanSamplingClient.sample
• Unparseable trajectories are discarded