Releases

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@core-ai/core-ai

• Refactor internal chat/image wrapper plumbing and stream event reduction logic to reduce duplication and improve readability without changing public behavior.

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@core-ai/openai

• Add model capability support for gpt-5.4 and gpt-5.4-pro.
• Refactor chat adapter internals to reduce duplicated stream and part-aggregation logic, and consistently report finishReason: 'tool-calls' when a function call is emitted from the stream.

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@core-ai/google-genai

• Add model capability support for gemini-3.1-pro and gemini-3.1-flash-lite-preview.
• Refactor adapter internals to reduce duplication and simplify stream/request helper logic without changing runtime behavior.

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@core-ai/mistral

• Refactor adapter internals to reduce duplication and simplify stream/request helper logic without changing runtime behavior.

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@core-ai/core-ai

• Replace ModelConfig with flat sampling fields (temperature, maxTokens, topP) on generate options. Introduce method-specific typed provider option interfaces (GenerateProviderOptions, EmbedProviderOptions, ImageProviderOptions) that providers extend via declaration merging.
• Restructure reasoning providerMetadata to use provider-namespaced keys. Adapters now detect cross-provider reasoning blocks and downgrade them to plain text instead of forwarding opaque metadata. Add getProviderMetadata helper.
• Redesign chat and object streaming around replayable stream handles with result and events, rename the handle types to ChatStream and ObjectStream, and accept caller-provided AbortSignals for cancellation.

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@core-ai/openai

• Migrate default chat models to the OpenAI Responses API and add a @core-ai/openai/compat entrypoint for Chat Completions compatibility.
• Namespace provider options under openai key with Zod validation. Responses API options: store, serviceTier, include, parallelToolCalls, user. Compat options: stopSequences, frequencyPenalty, presencePenalty, seed. Embed options: encodingFormat, user. Image options: background, moderation, outputCompression, outputFormat, quality, responseFormat, style, user.
• Update streaming adapters to expose replayable stream handles using ChatStream and ObjectStream.

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@core-ai/anthropic

• Namespace provider options under anthropic key with Zod validation. Generate options: topK, stopSequences, betas, outputConfig.
• Restructure reasoning providerMetadata to use provider-namespaced keys.
• Update streaming adapters to expose replayable stream handles using ChatStream and ObjectStream.

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@core-ai/google-genai

• Namespace provider options under google key with strict Zod validation. Generate options: stopSequences, frequencyPenalty, presencePenalty, seed, topK. Embed options: taskType, title, mimeType, autoTruncate. Image options: aspectRatio, personGeneration, safetyFilterLevel, negativePrompt, guidanceScale, seed.
• Restructure reasoning providerMetadata to use provider-namespaced keys.
• Update streaming adapters to expose replayable stream handles using ChatStream and ObjectStream.

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@core-ai/mistral

• Namespace provider options under mistral key with Zod validation. Generate options: stopSequences, frequencyPenalty, presencePenalty, randomSeed, parallelToolCalls, promptMode, safePrompt. Embed options: outputDtype, encodingFormat, metadata.
• Restructure reasoning providerMetadata to use provider-namespaced keys.
• Update streaming adapters to expose replayable stream handles using ChatStream and ObjectStream.

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All packages

• Fix release publish race: remove prepublishOnly to avoid concurrent tsup builds failing to resolve @core-ai/core-ai.

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@core-ai/core-ai

• AssistantMessage: content and toolCalls fields replaced by parts: AssistantContentPart[] array
• StreamEvent: content-delta renamed to text-delta, new reasoning-start, reasoning-delta, reasoning-end events added
• GenerateResult: adds required parts and reasoning fields
• ChatOutputTokenDetails.reasoningTokens: changed from number to optional

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@core-ai/openai

• Add reasoning support for OpenAI models (Chat Completions API). Maps unified reasoning.effort to reasoning_effort with model-aware clamping. Extracts reasoning content from responses and streams. Validates parameter restrictions for GPT-5.1+ models.

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@core-ai/anthropic

• Add reasoning support for Anthropic models with adaptive and manual thinking modes. Maps unified reasoning.effort to adaptive effort levels or manual budget_tokens based on model capabilities. Extracts thinking and redacted thinking blocks with signature preservation for multi-turn fidelity.

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@core-ai/google-genai

• Add reasoning support for Google GenAI models. Maps unified reasoning.effort to thinkingLevel for Gemini 3 or thinkingBudget for Gemini 2.5 based on model capabilities. Extracts thought content with thought signature preservation for multi-turn fidelity.

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@core-ai/mistral

• Add reasoning support for Mistral Magistral models. Extracts thinking chunks from response content and streams as reasoning events.

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@core-ai/core-ai

• Remove usage.totalTokens
• Move usage.reasoningTokens to usage.outputTokenDetails.reasoningTokens
• Add usage.inputTokenDetails.{cacheReadTokens, cacheWriteTokens}

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@core-ai/openai

• Update usage mapping to the new nested ChatUsage structure. Maps prompt_tokens_details.cached_tokens to inputTokenDetails.cacheReadTokens and completion_tokens_details.reasoning_tokens to outputTokenDetails.reasoningTokens.

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@core-ai/anthropic

• Update usage mapping to the new nested ChatUsage structure. Reports total inputTokens including cache tokens, maps cache_read_input_tokens and cache_creation_input_tokens to inputTokenDetails.

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@core-ai/google-genai

• Update usage mapping to the new nested ChatUsage structure. Maps cachedContentTokenCount to inputTokenDetails.cacheReadTokens and thoughtsTokenCount to outputTokenDetails.reasoningTokens.

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@core-ai/mistral

• Update usage mapping to the new nested ChatUsage structure with zero defaults for cache and reasoning token details.

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@core-ai/core-ai

• Add first-class structured output support with generateObject() and streamObject() across core and all provider chat models. Introduces schema-driven typed object generation, structured output streaming events, and standardized structured-output errors.
• Clarify embedding usage semantics by making EmbedResult.usage optional in the core API contract, so providers can return usage: undefined when token counts are not exposed by the underlying API.

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@core-ai/openai

• Add structured output support with generateObject() and streamObject().

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@core-ai/anthropic

• Add structured output support with generateObject() and streamObject().

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@core-ai/google-genai

• Add structured output support with generateObject() and streamObject().
• Update embedding behavior to only include usage when token statistics are present, and add provider E2E contract coverage.

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@core-ai/mistral

• Add structured output support with generateObject() and streamObject().

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All packages

• Broaden Zod compatibility to support both Zod 3 and Zod 4 across all packages. Updates published Zod ranges and raises the minimum zod-to-json-schema version to one that supports Zod 4, preventing peer dependency conflicts for projects already using Zod 4.

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@core-ai/mistral

• Add new @core-ai/mistral provider package powered by the @mistralai/mistralai SDK, including chat generation, streaming, tool-calling, and embeddings support.