Features & Enhancements

• Add Anthropic Citation API support by @TomeHirata in #8721
• Add api reference for citations and document by @TomeHirata in #8801
• Allow custom type to be streamed and use native response by @TomeHirata in #8778
• Fix example code for Citations by @TomeHirata in #8868
• Add ToolCall.execute for smoother tool execution (#8825, @TomeHirata)
• Add DSPy User-Agent header (#8887, @TomeHirata)
• Update headers when specified (#8893, @TomeHirata)
• Arbor GRPO Sync Update (#8939, @Ziems)
• Deprecate Image from_* helpers in favor of flexible constructor by @isaacbmiller in #8771
• Cache Image.format for better throughput by @TomeHirata in #8842
• test(dspy.Image): Adds a test with ReAct that has an Image tool by @isaacbmiller in #8855

Bug Fixes & Type Handling

• Fix #8703 - fixing module and feedback mismatch by @Lucas-Fernandes-Martins in #8777
• Fix value parsing and add tests by @chenmoneygithub in #8774
• Parse doubly-encoded base type in json.parse by @TomeHirata in #8814
• Fix unexpected parsing of Optional[str] fields when string has brackets or braces by @sontanon in #8805
• Use mcp.ClientSession for type hint by @TomeHirata in #8826
• Fix type hint for callpreprocess by @TomeHirata in #8827
• fix: Allow DummyLM answers dict values to be of any type to work with a wider range of signatures by @BenMcH in #8803
• Fix the crash when usage tracker is enabled with non-prediction output by @TomeHirata in #8831
• Fallback to memory cache when disk is not available by @TomeHirata in #8718
• bug(lm): Avoid unnecessary cache key computation by @isaacbmiller in #8862
• Display metric=0 in eval table by @TomeHirata in #8817
• Add save/load to Embeddings by @TomeHirata in #8818
• Fix chunk loss in long streaming with native response field (#8881, @TomeHirata)
• Make the buffer condition more precise (#8907, @TomeHirata)
• fix: add fallback on missing end marker during streaming (#8890, @enitrat)
• fix(JSONAdapter): escape logic when JSON mode but no structured outputs (#8871, @isaacbmiller)
• fix: XML adapter markers (#8876, @enitrat)
• Fix test_xml_adapter_full_prompt (#8904, @TomeHirata)
• Fix responses API (#8880, @chenmoneygithub)
• Fix response_format handling for responses API (#8911, @TomeHirata)
• Fix error handling in dspy parallel (#8860, @TomeHirata)
• fix(LM): default temperature and max_tokens to None (#8908, @isaacbmiller)
• fix(MIPROv2): select between task_model and prompt_model (#8877, @isaacbmiller)
• Exclude API keys from saved programs (#8941, @Copilot)

Documentation & Tutorials

• Minor document changes by @Navanit-git in #8722
• Add doc page to learn tool usage in DSPy by @TomeHirata in #8709
• Style fix for tool page by @TomeHirata in #8781
• Add tracing banner in new tutorials by @B-Step62 in #8772
• docs: fix link to the sglang installation/getting started page by @tomsanbear in #8776
• Guide on using native tool calling by @chenmoneygithub in #8788
• fix: removed duplicate cell from GEPA information extraction tutorial by @vacmar01 in #8806
• Remove EmailInsight class from email extraction tutorial by @TomeHirata in #8790
• Update documentation to include responses api by @chenmoneygithub in #8780
• [Feature] Add automatic llms.txt generation via mkdocs-llmstxt plugin by @aberoham in #8562
• Guide on using native tool calling by @chenmoneygithub in #8788
• Update HotPotQA in light of #8591 by @okhat in #8751
• Add Learn MCP page (#8903, @TomeHirata)
• Fix MIPRO paper link in RAG tutorial (#8937, @TomeHirata)
• [Docstring] Add docstring for Adapter (#8915, @chenmoneygithub)
• [Docs] Google-style docstrings for dspy/primitives/example Example class (#8949, @Davshiv20)
• [Docs] Google-style docstrings for Signature.prepend/append/insert/delete (#8945, @gnetsanet)
• Better tutorial sidebar—do not auto-expand all tutorials (#8912, @chenmoneygithub)

Minor Fixes & Maintenance

• Use developer role in response API by @TomeHirata in #8727
• 8688 csv output by @crawftv in #8725
• Add header link by @TomeHirata in #8773
• Add experimental annotation by @TomeHirata in #8712
• Update LICENSE error by @TomeHirata in #8783
• Fixed Spelling error in DatasetDescriptor Prompt by @PoeAudits in #8812
• Update API reference by @TomeHirata in #8844
• Expose EvaluationResult as dspy.evaluate.EvaluationResult by @TomeHirata in #8843
• Include built-in types in DSPy api references by @chenmoneygithub in #8810
• Change DummyLM to take an adapter at init by @isaacbmiller in #8802
• Infinitus AI agents by @suman-subash-infinitusai in #8708
• [WIP] Arbor Interface Update by @Ziems in #8837
• Refactor URL construction in ArborReinforceJob to use urljoin (#8951, @Ziems)
• Update type hint of ClientSession (#8894, @TomeHirata)
• Long line in function signature (style) (#8914, @chenmoneygithub)
• Fix lint of LM (#8884, @chenmoneygithub)
• Deflake the real LM test (#8924, @chenmoneygithub)

New Contributors

• @crawftv made their first contribution in https://github.com/stanfordnlp/dspy/pull/8725
• @Navanit-git made their first contribution in https://github.com/stanfordnlp/dspy/pull/8722
• @smec-cgint made their first contribution in https://github.com/stanfordnlp/dspy/pull/8739
• @suman-subash-infinitusai made their first contribution in https://github.com/stanfordnlp/dspy/pull/8708
• @andressrg made their first contribution in https://github.com/stanfordnlp/dspy/pull/8737
• @tomsanbear made their first contribution in https://github.com/stanfordnlp/dspy/pull/8776
• @Lucas-Fernandes-Martins made their first contribution in https://github.com/stanfordnlp/dspy/pull/8777
• @aberoham made their first contribution in https://github.com/stanfordnlp/dspy/pull/8562
• @PoeAudits made their first contribution in https://github.com/stanfordnlp/dspy/pull/8812
• @sontanon made their first contribution in https://github.com/stanfordnlp/dspy/pull/8805
• @enitrat made their first contribution in https://github.com/stanfordnlp/dspy/pull/8890
• @Davshiv20 made their first contribution in https://github.com/stanfordnlp/dspy/pull/8949
• @gnetsanet made their first contribution in https://github.com/stanfordnlp/dspy/pull/8945

Full Changelog: https://github.com/stanfordnlp/dspy/compare/3.0.3...3.0.4