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npm · #1698 most downloaded on npm
The official TypeScript library for the OpenAI API
Last release today
04 Oct 2026
Ships on a steady schedule
a new release about every 2 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
6 years old
398 releases · first in 2020
One column per quarter.
api: Add tools and structured outputs to evals
Full Changelog: v5.1.1...v5.2.0
assistants: handle thread.run.incomplete while streaming
Full Changelog: v5.1.0...v5.1.1
api: add new realtime and audio models, realtime session options
Full Changelog: v5.0.2...v5.1.0
api: Fix evals and code interpreter interfaces
Full Changelog: v5.0.1...v5.0.2
types: add missing type annotation
update next to 14.2.25 for CVE-2025-29927
Full Changelog: v5.0.0-alpha.0...v5.0.0
get /chat/completions endpoint (9697139)get /chat/completions endpoint (16c67be)get /responses/{response_id}/input_items endpoint (f2c5aba)get /responses/{response_id}/input_items endpoint (3676d34)thread.run.incomplete event (a2714bb)get /containers/{container_id}/files/{file_id}/content (8502966)get /containers/{container_id}/files/{file_id}/content (899869b)get /containers/{container_id}/files/{file_id}/content (83129d7)X-Stainless-Timeout in seconds (5a272a7)X-Stainless-Timeout in seconds (#1442) (5e5e460)id in responses pagination (d2be74a)core/ directory, deprecate old paths (38c9d54)Nothing published for this version
Nothing published for this version
api: Config update for pakrym-stream-param
Full Changelog: v4.103.0...v4.104.0
get /containers/{container_id}/files/{file_id}/content (83129d7)api: new streaming helpers for background responses
Full Changelog: v4.102.0...v4.103.0
## 4.102.0 (2025-05-21) Full Changelog: v4.101.0...v4.102.0 ### Features * api: add container endpoint
Full Changelog: v4.101.0...v4.102.0
## 4.101.0 (2025-05-21) Full Changelog: v4.100.0...v4.101.0 ### Features * api: new API tools (fb4014f) ### Chores * docs: grammar improvements (7761c
Full Changelog: v4.100.0...v4.101.0
api: further updates for evals API
Full Changelog: v4.99.0...v4.100.0
api: Updating Assistants and Evals API schemas
api: Add reinforcement fine-tuning api support
Full Changelog: v4.97.0...v4.98.0
docs: add missing deprecation warnings
types: export ParseableToolsParams
types: export ParseableToolsParams
api: adding new image model support
Full Changelog: v4.95.1...v4.96.0
zod: warn on optional field usage
api: add o3 and o4-mini model IDs
Full Changelog: v4.94.0...v4.95.0
api: adding gpt-4.1 family of model IDs
## 4.93.0 (2025-04-08) Full Changelog: v4.92.1...v4.93.0 ### Features * api: Add evalapi to sdk (#1456) (ee917e3) ### Chores * internal: fix examples
internal: only run examples workflow in main repo
api: improve type resolution when importing as a package
Full Changelog: v4.91.1...v4.92.0
X-Stainless-Timeout in seconds (#1442) (aa4206c)Remove deprecated/unused remote spec feature
Full Changelog: v4.91.0...v4.91.1
api: add get /responses/{response_id}/input_items endpoint
Full Changelog: v4.90.0...v4.91.0
get /responses/{response_id}/input_items endpoint (ef0e0ac)api: add get /chat/completions endpoint
Full Changelog: v4.89.1...v4.90.0
get /chat/completions endpoint (2d6710a)avoid type error in certain environments
api: new models for TTS, STT, + new audio features for Realtime
api: o1-pro now available through the API
api: correct some Responses types
responses: correct reasoning output type
Full Changelog: v4.87.2...v4.87.3
responses: correctly add output_text
Full Changelog: v4.87.1...v4.87.2
## 4.87.1 (2025-03-11) Full Changelog: v4.87.0...v4.87.1 ### Bug Fixes * correct imports
api: add /v1/responses and built-in tools
Full Changelog: v4.86.2...v4.87.0
internal: run example files in CI
update URLs from stainlessapi.com to stainless.com
## 4.86.0 (2025-02-27) Full Changelog: v4.85.4...v4.86.0 ### Features * api: add gpt-4.5-preview
internal: fix devcontainers setup
parsing: remove tool_calls default empty array
optimize sse chunk reading off-by-one error
client: fix export map for index exports
api: add support for storing chat completions
realtime: correct websocket type var constraint
pagination: avoid fetching when has_more: false
Full Changelog: v4.83.0...v4.84.0
thread.run.incomplete event (7032cc4)client: send X-Stainless-Timeout header
examples/realtime: remove duplicate session.update call
## 4.81.0 (2025-01-29) Full Changelog: v4.80.1...v4.81.0 ### Features * azure: Realtime API support
azure: include retry count header
api: update enum values, comments, and examples
## 4.79.4 (2025-01-21) Full Changelog: v4.79.3...v4.79.4 ### Bug Fixes * jsr: correct zod config (e45fa5f) ### Chores * internal: minor restructuring
## 4.79.3 (2025-01-21) Full Changelog: v4.79.2...v4.79.3 ### Bug Fixes * jsr: export zod helpers
readme: fix Realtime API example link
realtime: correct import syntax
client: add Realtime API support
send correct Accept header for certain endpoints
## 4.78.0 (2025-01-09) Full Changelog: v4.77.4...v4.78.0 ### Features * client: add realtime types
## 4.77.4 (2025-01-08) Full Changelog: v4.77.3...v4.77.4 ### Documentation * readme: fix misplaced period
## 4.77.3 (2025-01-03) Full Changelog: v4.77.2...v4.77.3 ### Chores * api: bump spec version
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