release: 1.4.0

[stainless-app]

Automated Release PR

1.4.0 (2026-01-24)

Full Changelog: v1.3.0...v1.4.0

Features

• add Slack notification workflow for new pull requests (97535a3)
• api: api update (365a9ae)
• api: api update (db00ca9)
• api: api update (a4e0f68)
• api: api update (40c19d5)
• api: api update (979a984)
• api: api update (3a75371)
• api: api update (80741ad)
• api: api update (e6cc0b3)
• api: api update (9514729)
• api: api update (12c16a2)
• api: api update (bdb1ebe)
• api: api update (0cdedc2)
• api: api update (f717b91)
• api: api update (24340ab)
• api: api update (f4f83bd)
• api: api update (d403264)
• api: api update (c7a1198)
• api: api update (9265a0a)
• api: api update (880c195)
• api: changed name (a5fbbc6)
• api: enable tests (64ccd03)
• api: exclude non sdk endpoints (fb04bc4)
• api: fix missing endpoint (427d1d3)
• api: fix modelSelect error (eb29990)
• api: manual updates (4f5cbc8)
• api: manual updates (88af4f8)
• api: manual updates (ac84aab)
• api: manual updates (3de5719)
• api: manual updates (f10b3cf)
• api: manual updates (48af7c1)
• api: manual updates (ae9b855)
• api: manual updates (3b34f4f)
• api: manual updates (50911a0)
• api: manual updates (1d846ce)
• api: manual updates (e864113)
• api: manual updates (0a7ac49)
• api: manual updates (dd9657d)
• api: manual updates (b905d72)
• api: manual updates (d664d8d)
• api: manual updates (603c1b7)
• api: manual updates (42fb39e)
• api: manual updates (9ee8b3e)
• api: manual updates (8062369)
• api: regen docs (c80dbe1)
• api: report group (4312188)
• api: update nomenclature (413eff4)
• api: verify mock tests enabled (638d79b)
• client: add support for binary request streaming (8b9ac11)
• enhance Slack PR notification to include 'ready for review' status and additional details (af8afd5)

Bug Fixes

• client: close streams without requiring full consumption (c9f7310)
• compat with Python 3.14 (566b7bf)
• compat: update signatures of model_dump and model_dump_json for Pydantic v1 (1417077)
• ensure streams are always closed (94cd458)
• types: allow pyright to infer TypedDict types within SequenceNotStr (5663881)
• use async_to_httpx_files in patch method (132c94c)

Chores

• add missing docstrings (003db35)
• add Python 3.14 classifier and testing (9acba74)
• api: changed default client name to NotDiamond (28f6709)
• bump httpx-aiohttp version to 0.1.9 (37d5de2)
• ci: upgrade actions/github-script (352e6a8)
• deps: mypy 1.18.1 has a regression, pin to 1.17 (578a964)
• docs: update README with new prompt adaptation examples and enable prototype mode (bcaa9e8)
• docs: use environment variables for authentication in code snippets (4493c72)
• internal/tests: avoid race condition with implicit client cleanup (14e720b)
• internal: add --fix argument to lint script (448c196)
• internal: add missing files argument to base client (47b12a0)
• internal: codegen related update (b26fdeb)
• internal: detect missing future annotations with ruff (316a749)
• internal: grammar fix (it's -> its) (6d37a12)
• internal: update actions/checkout version (15211cd)
• package: drop Python 3.8 support (8f6e2eb)
• remove commented-out line for bot notification exclusion in Slack PR workflow (e0c337e)
• remove condition to exclude bot users from Slack notification in PR workflow (776b597)
• speedup initial import (b3ceca0)
• update lockfile (8b040bc)
• update SDK settings (227346c)
• update SDK settings (ba3968b)
• update SDK settings (26ae314)
• update SDK settings (ecc0dc6)

Documentation

• update README to include example of initializing NotDiamond client with API key (3f3a1e5)
• update README to reflect changes in Prompt Adaptation details and streamline key features section (71f97f8)
• update README to reflect changes in prompt adaptation method names and remove outdated async usage section (c793b18)
• update README to remove outdated Prompt Adaptation section and add new examples for intelligent model routing and training a custom router. (17b08b6)

Refactors

• README: update terminology from "Prompt Adaptation" to "Prompt Optimization" and adjust related code examples (7cb7d97)

---

This pull request is managed by Stainless's GitHub App.

The semver version number is based on included commit messages. Alternatively, you can manually set the version number in the title of this pull request.

For a better experience, it is recommended to use either rebase-merge or squash-merge when merging this pull request.

🔗 Stainless website
📚 Read the docs
🙋 Reach out for help or questions