PyPI · #208 most downloaded on PyPI

anthropic

1.11.0196M downloads/moanthropics/anthropic-sdk-python ↗New releases in your daily digest, changelog included.

The official Python library for the anthropic API

Last release today
30 Sep 2026
Ships on a steady schedule
a new release about every 1 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
4 years old
223 releases · first in 2023

Release timeline

223 releases since 2023

2023202420252026

20232026

One column per quarter.

Releases

0.15.02 Feb 20242 sources agree
api: add new usage response fields
0.15.0 (2024-02-02)

Full Changelog: v0.14.1...v0.15.0

Features

api: add new usage response fields (#332) (554098e)
Open source →
0.14.12 Feb 20242 sources agree
interal: make link to api.md relative
0.14.1 (2024-02-02)

Full Changelog: v0.14.0...v0.14.1

Chores

interal: make link to api.md relative (#330) (e393317)

0.14.031 Jan 20242 sources agree

## 0.14.0 (2024-01-31) Full Changelog: v0.13.0...v0.14.0 ### Features * bedrock: include bedrock SDK

0.14.0 (2024-01-31)

Full Changelog: v0.13.0...v0.14.0

Features

bedrock: include bedrock SDK (#328) (a03f21f)

Open source →

0.13.031 Jan 20242 sources agree

client: support parsing custom response types

0.13.0 (2024-01-30)

Full Changelog: v0.12.0...v0.13.0

Features

client: support parsing custom response types (#325) (416633f)

Chores

internal: cast type in mocked test (#326) (fd22d8e)
internal: enable ruff type checking misuse lint rule (#324) (6587598)
internal: support multipart data with overlapping keys (#322) (9ecab60)
internal: support pre-release versioning (#327) (78b1bfe)

Open source →

0.12.026 Jan 20242 sources agree

client: enable follow redirects by default

0.12.0 (2024-01-25)

Full Changelog: v0.11.0...v0.12.0

Features

client: enable follow redirects by default (#320) (9959c32)

Open source →

0.11.023 Jan 20242 sources agree

vertex: add support for google vertex

0.11.0 (2024-01-23)

Full Changelog: v0.10.0...v0.11.0

Features

vertex: add support for google vertex (#319) (5324415)

Chores

internal: add internal helpers (#316) (8c75cdf)
internal: update resource client type (#318) (bdd8d84)

Open source →

0.10.018 Jan 20242 sources agree

client: add support for streaming raw responses

0.10.0 (2024-01-18)

Full Changelog: v0.9.0...v0.10.0

Features

client: add support for streaming raw responses (#307) (f295982)

Bug Fixes

ci: ignore stainless-app edits to release PR title (#315) (69e8b03)

Chores

add write_to_file binary helper method (#309) (8ac7988)
client: improve debug logging for failed requests (#303) (5e58c25)
internal: fix typing util function (#310) (3671aa6)
internal: remove redundant client test (#311) (d7140f7)
internal: share client instances between all tests (#314) (ccf731b)
internal: speculative retry-after-ms support (#312) (4b27da9)
internal: updates to proxy helper (#308) (a0b3cdb)
lazy load raw resource class properties (#313) (b13f824)

Documentation

readme: improve api reference (#306) (c3ab836)

Open source →

0.9.08 Jan 20242 sources agree

add None default value to nullable response properties

0.9.0 (2024-01-08)

Full Changelog: v0.8.1...v0.9.0

Features

add None default value to nullable response properties (#299) (da423db)

Bug Fixes

client: correctly use custom http client auth (#296) (6289d6e)

Chores

add .keep files for examples and custom code directories (#302) (73a07ea)
internal: loosen type var restrictions (#301) (5e5e1e7)
internal: replace isort with ruff (#298) (7c60904)
use property declarations for resource members (#300) (8671297)

Open source →

0.8.122 Dec 20232 sources agree

internal: use ruff instead of black for formatting

0.8.1 (2023-12-22)

Full Changelog: v0.8.0...v0.8.1

Chores

internal: add bin script (#292) (ba2953d)
internal: fix typos (#287) (4ffbcdf)
internal: use ruff instead of black for formatting (#294) (1753887)
package: bump minimum typing-extensions to 4.7 (#290) (9ec5c57)

Documentation

messages: improvements to helpers reference + typos (#291) (d18a895)
readme: remove old migration guide (#289) (eec4574)

Open source →

0.8.019 Dec 20232 sources agree

api: add messages endpoint with streaming helpers

0.8.0 (2023-12-19)

Full Changelog: v0.7.8...v0.8.0

Features

api: add messages endpoint with streaming helpers (#286) (c464b87)

Chores

ci: run release workflow once per day (#282) (3a23912)
client: only import tokenizers when needed (#284) (b9e38b2)
streaming: update constructor to use direct client names (#285) (0c55c84)

Open source →

0.7.813 Dec 20232 sources agree

avoid leaking memory when Client.with_options is used

0.7.8 (2023-12-12)

Full Changelog: v0.7.7...v0.7.8

Bug Fixes

avoid leaking memory when Client.with_options is used (#275) (5e51ebd)
client: correct base_url setter implementation (#265) (29d0c8b)
client: ensure retried requests are closed (#261) (5d9aa75)
errors: properly assign APIError.body (#274) (342846f)

Chores

internal: enable more lint rules (#273) (0ac62bc)
internal: reformat imports (#270) (dc55724)
internal: reformat imports (#272) (0d82ce4)
internal: remove unused file (#264) (1bfc69b)
internal: replace string concatenation with f-strings (#263) (f545c35)
internal: update formatting (#271) (802ab59)
package: lift anyio v4 restriction (#266) (a217e99)

Documentation

update examples to show claude-2.1 (#276) (8f562f4)

Refactors

client: simplify cleanup (#278) (3611ae2)
simplify internal error handling (#279) (993b51a)

Open source →

0.7.729 Nov 20232 sources agree

internal: add tests for proxy change

0.7.7 (2023-11-29)

Full Changelog: v0.7.6...v0.7.7

Chores

internal: add tests for proxy change (#260) (3b52136)
internal: updates to proxy helper (#258) (94c4de8)

Open source →

0.7.628 Nov 20232 sources agree

## 0.7.6 (2023-11-28) Full Changelog: v0.7.5...v0.7.6 ### Chores * deps: bump mypy to v1.7.1

0.7.6 (2023-11-28)

Full Changelog: v0.7.5...v0.7.6

Chores

deps: bump mypy to v1.7.1 (#256) (02d4ed8)

Open source →

0.7.527 Nov 20232 sources agree

internal: revert recent options change

0.7.5 (2023-11-24)

Full Changelog: v0.7.4...v0.7.5

Chores

internal: revert recent options change (#252) (d60d5c3)
internal: send more detailed x-stainless headers (#254) (a268d4b)

Open source →

0.7.423 Nov 20232 sources agree

## 0.7.4 (2023-11-23) Full Changelog: v0.7.3...v0.7.4 ### Chores * internal: options updates

0.7.4 (2023-11-23)

Full Changelog: v0.7.3...v0.7.4

Chores

internal: options updates (#248) (5a3b236)

Open source →

0.7.321 Nov 20232 sources agree

client: attempt to parse unknown json content types

0.7.3 (2023-11-21)

Full Changelog: v0.7.2...v0.7.3

Bug Fixes

client: attempt to parse unknown json content types (#243) (9fc275f)

Chores

client: improve copy method (#246) (c84563f)
package: add license classifier metadata (#247) (500d0ca)

Open source →

0.7.218 Nov 20232 sources agree

internal: update type hint for helper function

0.7.2 (2023-11-17)

Full Changelog: v0.7.1...v0.7.2

Chores

internal: update type hint for helper function (#241) (3179104)

Open source →

0.7.117 Nov 20232 sources agree

## 0.7.1 (2023-11-16) Full Changelog: v0.7.0...v0.7.1 ### Documentation * readme: minor updates

0.7.1 (2023-11-16)

Full Changelog: v0.7.0...v0.7.1

Documentation

readme: minor updates (#238) (c40c4e1)

Open source →

0.7.016 Nov 20232 sources agree

client: support reading the base url from an env variable

0.7.0 (2023-11-15)

Full Changelog: v0.6.0...v0.7.0

Features

client: support reading the base url from an env variable (#237) (dd91bfd)

Bug Fixes

client: correctly flush the stream response body (#230) (a60d543)
client: retry if SSLWantReadError occurs in the async client (#233) (33b553a)
client: serialise pydantic v1 default fields correctly in params (#232) (d5e70e8)
models: mark unknown fields as set in pydantic v1 (#231) (4ce7a1e)

Chores

internal: fix devcontainer interpeter path (#235) (7f92e25)
internal: fix typo in NotGiven docstring (#234) (ce5cccc)

Documentation

fix code comment typo (#236) (7ef0464)
reword package description (#228) (c18e5ed)

Open source →

0.6.09 Nov 20232 sources agree

client: adjust retry behavior to be exponential backoff

0.6.0 (2023-11-08)

Full Changelog: v0.5.1...v0.6.0

Features

client: adjust retry behavior to be exponential backoff (#205) (c8a4119)
client: allow binary returns (#217) (159ddd6)
client: improve file upload types (#204) (d85d1e0)
client: support accessing raw response objects (#211) (ebe8e4a)
client: support passing BaseModels to request params at runtime (#218) (9f04ea6)
client: support passing chunk size for binary responses (#227) (c88f01e)
client: support passing httpx.Timeout to method timeout argument (#222) (ef58166)
github: include a devcontainer setup (#216) (c9fee19)
package: add classifiers (#214) (380967e)

Bug Fixes

binaries: don't synchronously block in astream_to_file (#219) (2a2a617)
prevent TypeError in Python 3.8 (ABC is not subscriptable) (#221) (893e885)

Chores

docs: fix github links (#225) (dfa9935)
internal: fix some typos (#223) (9038193)
internal: improve github devcontainer setup (#226) (3cd90ab)
internal: minor restructuring of base client (#213) (60dc609)
internal: remove unused int/float conversion (#220) (a6bf20d)
internal: require explicit overrides (#210) (72f4339)

Documentation

fix github links (#215) (8cbed15)
improve to dictionary example (#207) (5e32c20)

Open source →

0.5.018 Oct 20232 sources agree

client: support passing httpx.URL instances to base_url

0.5.0 (2023-10-18)

Full Changelog: v0.4.1...v0.5.0

Features

client: support passing httpx.URL instances to base_url (#197) (fe61308)

Chores

internal: improve publish script (#196) (7c92b90)
internal: migrate from Poetry to Rye (#194) (1dd605e)
internal: update gitignore (#198) (4c210b7)

Open source →

0.4.116 Oct 20232 sources agree

client: accept io.IOBase instances in file params

0.4.1 (2023-10-16)

Full Changelog: v0.4.0...v0.4.1

Bug Fixes

client: accept io.IOBase instances in file params (#190) (5da5f0c)
streaming: add additional overload for ambiguous stream param (#185) (794dc4d)

Chores

internal: cleanup some redundant code (#188) (cb0bd8c)
internal: enable lint rule (#187) (123b5c1)

Documentation

organisation -> organization (UK to US English) (#192) (901a330)

Open source →

0.3.1128 Aug 20232 sources agree

readme: make print statements in streaming examples flush

0.3.11 (2023-08-26)

Documentation

readme: make print statements in streaming examples flush (#123) (d24dfaf)

Chores

internal: update anyio (#125) (34c7fa1)

Open source →

0.3.1016 Aug 20232 sources agree

allow a default timeout to be set for clients

0.3.10 (2023-08-16)

Features

add support for Pydantic v2 (#121) (cafa9be)
allow a default timeout to be set for clients (#117) (a115d2c)

Chores

assign default reviewers to release PRs (#119) (029a9e1)
internal: minor formatting change (#120) (7f2f54a)

Open source →

0.3.912 Aug 20232 sources agree

docs: remove extraneous space in examples

0.3.9 (2023-08-12)

Features

docs: remove extraneous space in examples (#109) (6d5c1f7)

Bug Fixes

docs: correct async imports (1ea1bf3)

Documentation

readme: remove beta status + document versioning policy (#102) (2f0a0f9)

Chores

deps: bump typing-extensions to 4.5 (#112) (f903269)
docs: remove trailing spaces (#113) (e876a6b)
internal: bump pytest-asyncio (#114) (679ecd0)
internal: update mypy to v1.4.1 (#100) (f615753)
internal: update ruff to v0.0.282 (#103) (9db4b34)

Open source →

0.3.82 Aug 20232 sources agree

client: add constants to client instances as well

0.3.8 (2023-08-01)

Features

client: add constants to client instances as well (#95) (d0fbe33)

Chores

internal: bump pyright (#94) (d2872dc)
internal: make demo example runnable and more portable (#92) (dea1aa2)

Documentation

readme: add token counting reference (#96) (79a339e)

Open source →

0.3.731 Jul 20232 sources agree

client: add client close handlers

0.3.7 (2023-07-29)

Features

client: add client close handlers (#89) (2520a03)

Bug Fixes

client: correctly handle environment variable access (aa53754)

Documentation

readme: use client everywhere for consistency (0ff8924)

Chores

internal: minor refactoring of client instantiation (adf9158)
internal: minor reformatting of code (#90) (1175572)

Open source →

0.3.622 Jul 20232 sources agree

readme: reference "client" in errors section and add missing import

0.3.6 (2023-07-22)

Documentation

readme: reference "client" in errors section and add missing import (#79) (ddc81cf)

Open source →

0.3.520 Jul 20232 sources agree

add flexible enum to model param

0.3.5 (2023-07-19)

Features

add flexible enum to model param (#75) (d16bb45)

Documentation

examples: bump model to claude-2 in example scripts (#67) (cd68de2)

Chores

internal: add codegen.log to .gitignore (#72) (d9b7e30)

Open source →

0.3.411 Jul 20232 sources agree

package: pin major versions of dependencies

0.3.4 (2023-07-11)

Chores

package: pin major versions of dependencies (#59) (3a75464)

Documentation

api: reference claude-2 (#61) (91ece29)
readme: update examples to use claude-2 (#65) (7e4714c)

Open source →

0.3.311 Jul 2023

fix(tokenizer): encoding issues for special characters

What's Changed

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.3.2...v0.3.3

Open source →

0.3.21 Jul 2023

upper bound pydantic version to 2.0 by @uripeled2 in https://github.com/anthropics/anthropic-sdk-python/pull/50

What's Changed

upper bound pydantic version to 2.0 by @uripeled2 in https://github.com/anthropics/anthropic-sdk-python/pull/50
update certifi to resolve https://github.com/anthropics/anthropic-sdk-python/security/dependabot/2

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.3.1...v0.3.2

Open source →

0.3.129 Jun 2023

This release prevents the async tokenizer from crashing if called multiple times in the same process, https://github.com/anthropics/anthropic-sdk-pyth

This release prevents the async tokenizer from crashing if called multiple times in the same process, https://github.com/anthropics/anthropic-sdk-python/pull/47.

Open source →

0.3.028 Jun 2023

In v0.3.0, we introduced a fully rewritten SDK.

In v0.3.0, we introduced a fully rewritten SDK.

The new version uses separate sync and async clients, unified streaming, typed params and structured response objects, and resource-oriented methods:

Sync before/after:

- client = anthropic.Client(os.environ["ANTHROPIC_API_KEY"])
+ client = anthropic.Anthropic(api_key=os.environ["ANTHROPIC_API_KEY"])
  # or, simply provide an ANTHROPIC_API_KEY environment variable:
+ client = anthropic.Anthropic();

- rsp = client.completion(**params)
- rsp["completion"]
+ rsp = client.completions.create(**params)
+ rsp.completion

Async before/after:

- client = anthropic.Client(os.environ["ANTHROPIC_API_KEY"])
+ client = anthropic.AsyncAnthropic(api_key=os.environ["ANTHROPIC_API_KEY"])

- await client.acompletion(**params)
+ await client.completions.create(**params)

The .completion_stream() and .acompletion_stream() methods have been removed; simply pass stream=Trueto .completions.create().

Streaming responses are now incremental; the full text is not sent in each message, as v0.3 sends the Anthropic-Version: 2023-06-01 header.

<details> <summary>Example streaming diff</summary>

  import anthropic

- client = anthropic.Client(os.environ["ANTHROPIC_API_KEY"])
+ client = anthropic.Anthropic()

  # Streams are now incremental diffs of text
  # rather than sending the whole message every time:
  text = "
- stream = client.completion_stream(**params)
- for data in stream:
-     diff = data["completion"].replace(text, "")
-     text = data["completion"]
+ stream = client.completions.create(**params, stream=True)
+ for data in stream:
+     diff = data.completion # incremental text
+     text += data.completion
      print(diff, end="")

  print("Done. Final text is:")
  print(text)

</details>

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.10...v0.3.0

Open source →

0.2.102 Jun 2023

# What's Changed * Add version header Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.9...v0.2.10

What's Changed

Add version header

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.9...v0.2.10

Open source →

0.2.915 May 2023

Remove length check from automatic SDK validations. by @jenan-anthropic in https://github.com/anthropics/anthropic-sdk-python/pull/30

What's Changed

Remove length check from automatic SDK validations. by @jenan-anthropic in https://github.com/anthropics/anthropic-sdk-python/pull/30
fix: api_url concat by @nero19960329 in https://github.com/anthropics/anthropic-sdk-python/pull/27

New Contributors

@jenan-anthropic made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/30
@nero19960329 made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/27

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.8...v0.2.9

Open source →

0.2.88 May 2023

Remove length check from automatic SDK validations #30

What's Changed

Remove length check from automatic SDK validations #30

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.7...v0.2.8

Open source →

0.2.715 Apr 2023

Fix: UnicodeEncodeError by @anthony-sarkis in https://github.com/anthropics/anthropic-sdk-python/pull/19

What's Changed

Fix: UnicodeEncodeError by @anthony-sarkis in https://github.com/anthropics/anthropic-sdk-python/pull/19

New Contributors

@anthony-sarkis made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/19

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.6...v0.2.7

Open source →

0.2.63 Apr 2023

Better async support by @mikelambert in https://github.com/anthropics/anthropic-sdk-python/pull/17

What's Changed

Better async support by @mikelambert in https://github.com/anthropics/anthropic-sdk-python/pull/17
Fail open when the tokenizer fails to load by @mikelambert in https://github.com/anthropics/anthropic-sdk-python/pull/16

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.5...v0.2.6

Open source →

0.2.529 Mar 2023

Fix for async API when handling errors

Open source →

0.2.428 Mar 2023

Raise exceptions on non-200 responses

What's Changed

Raise exceptions on non-200 responses
Support async methods
Implement better length checks on prompts (to match what we officially support) to ensure quality completions
Bump to 0.2.4

New Contributors

@agola11 made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/11

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.3...v0.2.4

Open source →

0.2.320 Mar 2023

Remove extra \n, use claude-v1 by @jacksonkernion in https://github.com/anthropics/anthropic-sdk-python/pull/5

What's Changed

Remove extra \n, use claude-v1 by @jacksonkernion in https://github.com/anthropics/anthropic-sdk-python/pull/5
format code to unified style by @ezzcodeezzlife in https://github.com/anthropics/anthropic-sdk-python/pull/2
Add tokenizer utils by @nbhargava in https://github.com/anthropics/anthropic-sdk-python/pull/6
Bump to version 0.2.3 by @nbhargava in https://github.com/anthropics/anthropic-sdk-python/pull/7

New Contributors

@jacksonkernion made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/5
@ezzcodeezzlife made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/2
@nbhargava made their first contribution in https://github.com/anthropics/anthropic-sdk-python/pull/6

Full Changelog: https://github.com/anthropics/anthropic-sdk-python/compare/v0.2.2...v0.2.3

Open source →

0.2.29 Feb 2023

Nothing published for this version

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anthropic

Release timeline

Releases

0.15.0 (2024-02-02)

Features

0.14.1 (2024-02-02)

Chores

0.14.0 (2024-01-31)

Features

0.13.0 (2024-01-30)

Features

Chores

0.12.0 (2024-01-25)

Features

0.11.0 (2024-01-23)

Features

Chores

0.10.0 (2024-01-18)

Features

Bug Fixes

Chores

Documentation

0.9.0 (2024-01-08)

Features

Bug Fixes

Chores

0.8.1 (2023-12-22)

Chores

Documentation

0.8.0 (2023-12-19)

Features

Chores

0.7.8 (2023-12-12)

Bug Fixes

Chores

Documentation

Refactors

0.7.7 (2023-11-29)

Chores

0.7.6 (2023-11-28)

Chores

0.7.5 (2023-11-24)

Chores

0.7.4 (2023-11-23)

Chores

0.7.3 (2023-11-21)

Bug Fixes

Chores

0.7.2 (2023-11-17)

Chores

0.7.1 (2023-11-16)

Documentation

0.7.0 (2023-11-15)

Features

Bug Fixes

Chores

Documentation

0.6.0 (2023-11-08)

Features

Bug Fixes

Chores

Documentation

0.5.0 (2023-10-18)

Features

Chores

0.4.1 (2023-10-16)

Bug Fixes

Chores

Documentation

0.3.11 (2023-08-26)

Documentation

Chores

0.3.10 (2023-08-16)

Features

Chores

0.3.9 (2023-08-12)

Features

Bug Fixes

Documentation

Chores