Release notes from pydantic-ai
Articles about Release notes from pydantic-ai
V2.55.0 (2026-10-09)
What's Changed ⚠️ Compatibility Notes Require Python 3.11 or newer in every package; Python 3.10 installs resolve to 2.54.0 and earlier by @Kludex in #9526 Record the tool requests of ExaSearch, YouSearch, LocalStack and other harness capabilities under durable execution by @DouweM in #9705 Bound retained realtime audio like retained images with r
CLAI2 bleeding
Sdists rebuilt from main for /update on the CLAI bleeding channel. Not a release.
V2.54.0 (2026-10-02)
What's Changed ⚠️ Compatibility Notes Handle draft-7 list-form items in JsonSchemaTransformer, TestModel and Mistral streamed output, and make TestModel accept boolean subschemas and cap prefixItems at maxItems by @dsfaccini in #9560 Fix ImageGeneration under FallbackModel and dataclasses.replace, and compare Embedder by identity by @dsfaccini in
V2.53.0 (2026-10-01)
🛡️ Security This release fixes one security issue in ConcurrencyLimitedModel. See the advisory for full details and affected versions. GHSA-6fqq-452j-qhrp (high): a streamed request through Concur
V1.107.7 (2026-09-29)
🛡️ Security A maintenance release for the v1 line, carrying the v1 backport of the security fix released in 2.52.0. See the advisory for full details and affected versions. GHSA-v36g-jcw9-x7cw (mo
V2.52.0 (2026-09-29)
🛡️ Security This release fixes one security issue in web_fetch. See the advisory for full details and affected versions. GHSA-v36g-jcw9-x7cw (moderate): converting attacker-controlled HTML with de
V2.51.0 (2026-09-25)
What's Changed ⚠️ Compatibility Notes Match dated gemini-3.8-live ids, reject google_affective_dialog on Gemini 3.1 Flash Live and 3.8 Live at connect, and raise RealtimeError for Gemini Live close codes by @DouweM in #8761 Raise a UserError for a realtime tool_choice that forces a tool call on OpenAI, Azure OpenAI, and xAI by @DouweM in #8
V2.50.0 (2026-09-24)
What's Changed ⚠️ Compatibility Notes Ask a DecisionModel which route to take by name, with one label per route by @DouweM in #8733 Make ModelSelectionContext.messages end with the request being routed, and add ModelSelectionContext.prompt by @DouweM in #8737 Replace the decision model's tool-call lean with an opt-in decision_route_threshold
V2.49.0 (2026-09-23)
What's Changed 🚀 Features Add GitHubCopilotOAuthFlow for device authorization by @Kludex in #8618 Add BoolCriteria to say what a bool field's yes and no mean, and let a True/False Enum do the same by @DouweM in #8586 Use what the user wrote about None as the "none of these" option in TypeSafeModel by
V2.48.0 (2026-09-22)
What's Changed 🚀 Features Support genai-prices 0.1.7 and new OpenAI audio models by @adtyavrdhn in #8617 Add OpenAI gpt-6-sol and gpt-6-luna model support by @DouweM in #8635 Add Claude Opus 5.5 (claude-opus-5-5) support by
V2.47.0 (2026-09-21)
What's Changed ⚠️ Compatibility Notes Name a None output route None rather than NoneType by @DouweM in #8590 Raise when UserPromptPart.content is not a str or a sequence, instead of silently sending a dict's keys by @DouweM in #8595 🚀 Features Ask three more field types TypeSafeModel
V2.46.0 (2026-09-18)
What's Changed 🚀 Features Let TypeSafeModel fill a tool's arguments when Jev can express them by @DouweM in #8501 Add RealtimeSession.wait_for_playback() and let the docs examples finish the reply before closing by @DouweM in #8141 Add supports_text_output to ModelProfile, and run LLMJudge and GEval on a model without it by
V2.45.0 (2026-09-17)
What's Changed 🚀 Features Add TypeSafeModel for TypeSafe's Jev by @adtyavrdhn in #8450 🐛 Bug Fixes Pass xhigh effort through on Bedrock when the model profile supports it by @willfrey in #8392 Allow gpt-5.6-sol, gpt-5.6-luna, and gpt-5.6-terra on Bedrock Converse by @pydanty in
V2.44.0 (2026-09-16)
🛡️ Security This release fixes four security issues, all of them reached through web_fetch_tool or OpenTelemetry instrumentation. See each advisory for full details and affected versions. GHSA-vmx
V1.107.6 (2026-09-16)
🛡️ Security A maintenance release for the v1 line, carrying the v1 backports of the four security fixes released in 2.44.0. See each advisory for full details and affected versions. GHSA-vmxc-h2x2-jmf3 (moderate): cloud-metadata and private-IP blocklist bypass via an IPv6 zone identifier, on a URL opted into local network access. Reported by @euriconicacio. (#8402) GHSA-fpf4-vwcp-v4hp (moderate): superlinear response processing in web_fetch, in both the HTML conversion and the charset decode, blocking the event loop. Reported by @BrianWi