Changes

2026-11

• 

  perplexity/nemotron-3-ultra-550b-a55b deprecated

  Perplexity–notice
  Quote

  “It replaces perplexity/nemotron-3-ultra-550b-a55b, which is no longer listed in the Agent API or Orchestrator API model docs.”

  docs.perplexity.ai ›
• 

  preset deprecated

  Perplexity–notice→ effort
  Quote

  “Agent API: preset renamed to effort This is a naming change only. Effort levels keep the same models, prompts, tools, limits, and pricing. Version pinning and frozen configurations continue to work as before. preset is still accepted as a deprecated alias, and responses return both fields. See Effort.”

  docs.perplexity.ai ›
• 

  ultra deprecated

  Perplexity–notice
  Quote

  “The undocumented ultra effort name is removed and now returns an error. The wide-research alias now selects xhigh.”

  docs.perplexity.ai ›
• 

  xai/grok-4.20-multi-agent deprecated

  Perplexity–noticexai/grok-4.20-multi-agent → xai/grok-4.7
  Quote

  “The following models are no longer listed in the Agent API model docs, pricing calculator, or examples: Anthropic: anthropic/claude-opus-4-8, anthropic/claude-opus-4-7, anthropic/claude-opus-4-6, anthropic/claude-opus-4-5, anthropic/claude-sonnet-4-6, anthropic/claude-sonnet-4-5, and anthropic/claude-haiku-4-5 Google: google/gemini-3-flash-preview, google/gemini-3.1-pro-preview, google/gemini-3.1-…”

  docs.perplexity.ai ›
• 

  xai/grok-4.20-non-reasoning deprecated

  Perplexity–noticexai/grok-4.20-non-reasoning → xai/grok-4.7
  Quote

  “The following models are no longer listed in the Agent API model docs, pricing calculator, or examples: Anthropic: anthropic/claude-opus-4-8, anthropic/claude-opus-4-7, anthropic/claude-opus-4-6, anthropic/claude-opus-4-5, anthropic/claude-sonnet-4-6, anthropic/claude-sonnet-4-5, and anthropic/claude-haiku-4-5 Google: google/gemini-3-flash-preview, google/gemini-3.1-pro-preview, google/gemini-3.1-…”

  docs.perplexity.ai ›
• 

  xai/grok-4.20-reasoning deprecated

  Perplexity–noticexai/grok-4.20-reasoning → xai/grok-4.7
  Quote

  “The following models are no longer listed in the Agent API model docs, pricing calculator, or examples: Anthropic: anthropic/claude-opus-4-8, anthropic/claude-opus-4-7, anthropic/claude-opus-4-6, anthropic/claude-opus-4-5, anthropic/claude-sonnet-4-6, anthropic/claude-sonnet-4-5, and anthropic/claude-haiku-4-5 Google: google/gemini-3-flash-preview, google/gemini-3.1-pro-preview, google/gemini-3.1-…”

  docs.perplexity.ai ›
• 

  xai/grok-4.3 deprecated

  Perplexity–noticexai/grok-4.3 → xai/grok-4.7
  Quote

  “The following models are no longer listed in the Agent API model docs, pricing calculator, or examples: Anthropic: anthropic/claude-opus-4-8, anthropic/claude-opus-4-7, anthropic/claude-opus-4-6, anthropic/claude-opus-4-5, anthropic/claude-sonnet-4-6, anthropic/claude-sonnet-4-5, and anthropic/claude-haiku-4-5 Google: google/gemini-3-flash-preview, google/gemini-3.1-pro-preview, google/gemini-3.1-…”

  docs.perplexity.ai ›

2026-10

• 

  return_citations parameter deprecated

  Perplexity–notice
  Quote

  “Effective immediately, all API users will see citations returned as part of their requests by default. This is not a breaking change. The return_citations parameter will no longer have any effect.”

  docs.perplexity.ai ›
• 

  anthropic 0.125.0 → 1.16.0: changes parameters of 60 function(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 1.16.0: changes the types of 3 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 1.16.0: removes 70 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 1.17.0: changes parameters of 60 function(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 1.17.0: changes the types of 3 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 1.17.0: removes 70 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.0.0: changes parameters of 64 function(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.0.0: changes the types of 5 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.0.0: removes 71 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.1.0: changes parameters of 64 function(s)

  PyPI · anthropic●breaks on upgrade0.125.0 → drop `betas=`, `betas=`, `betas=`, `betas=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `after_id=`, `before_id=`, `after_id=`, `before_id=`, `display_title=`, `display_title=`, `output_format=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `compaction_control=`, `te
• 

  anthropic 0.125.0 → 2.1.0: changes the types of 5 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.1.0: removes 71 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.2.0: changes parameters of 64 function(s)

  PyPI · anthropic●breaks on upgrade0.125.0 → drop `betas=`, `betas=`, `betas=`, `betas=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `after_id=`, `before_id=`, `after_id=`, `before_id=`, `display_title=`, `display_title=`, `output_format=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `compaction_control=`, `te
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  anthropic 0.125.0 → 2.2.0: changes the types of 5 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.2.0: removes 71 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.3.0: changes parameters of 64 function(s)

  PyPI · anthropic●breaks on upgrade0.125.0 → drop `betas=`, `betas=`, `betas=`, `betas=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `after_id=`, `before_id=`, `after_id=`, `before_id=`, `display_title=`, `display_title=`, `output_format=`, `temperature=`, `top_k=`, `top_p=`, `stream=`, `temperature=`, `top_k=`, `top_p=`, `compaction_control=`, `te
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  anthropic 0.125.0 → 2.3.0: changes the types of 5 API(s)

  PyPI · anthropic●breaks on upgrade
• 

  anthropic 0.125.0 → 2.3.0: removes 71 API(s)

  PyPI · anthropic●breaks on upgrade
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  cryptography 49.0.0 → 50.0.2: changes the types of 4 API(s)

  PyPI · cryptography●breaks on upgrade
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  cryptography 49.0.0 → 50.0.2: removes 3 API(s)

  PyPI · cryptography●breaks on upgrade
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  dataclass-wizard 0.39.1 → 1.0.0: changes the types of 1 API(s)

  PyPI · dataclass-wizard●breaks on upgrade
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  dataclass-wizard 0.39.1 → 1.0.0: removes 95 API(s)

  PyPI · dataclass-wizard●breaks on upgrade0.39.1 → dataclass_wizard.env_field → dataclass_wizard.v0.env_field; dataclass_wizard.json_field → dataclass_wizard.v0.json_field; dataclass_wizard.json_key → dataclass_wizard.v0.json_key; dataclass_wizard.path_field → dataclass_wizard.v0.path_field; dataclass_wizard.KeyPath → dataclass_wizard.v0.KeyPath; dataclass_wizard.Pattern → dataclass_wizard.v0.Pattern; dataclass_wizard.JSONPyWizard → dataclass_wizard.v0.JSONPyWizard; dataclass_wizard.JSONSerializable → dataclass_wizard.v0.JSONSerializable; datacl
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  fastapi 0.111.1 → 0.156.2: changes the arguments of 4 function(s)

  PyPI · fastapi●breaks on upgrade
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  fastapi 0.111.1 → 0.156.2: changes parameters of 24 function(s)

  PyPI · fastapi●breaks on upgrade
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  fastapi 0.111.1 → 0.156.2: changes the types of 145 API(s)

  PyPI · fastapi●breaks on upgrade
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  fastapi 0.111.1 → 0.156.2: removes 74 API(s)

  PyPI · fastapi●breaks on upgrade
• 

  fastapi 0.159.1 → 0.161.1: changes parameters of 4 function(s)

  PyPI · fastapi●breaks on upgrade0.159.1 → drop `_request_param_names=`, `_request_param_names=`, `known_param_names=`, `known_param_names=`
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  flask 1.0.2 → 3.1.3: changes the arguments of 4 function(s)

  PyPI · flask●breaks on upgrade
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  flask 1.0.2 → 3.1.3: changes parameters of 27 function(s)

  PyPI · flask●breaks on upgrade1.0.2 → drop `filename_or_fp=`, `attachment_filename=`, `add_etags=`, `cache_timeout=`, `filename=`, `options=`, `args=`, `type=`, `script_info=`, `script_info=`, `script_info=`, `env=`, `eager_loading=`, `eager_loading=`, `as_module=`
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  flask 1.0.2 → 3.1.3: changes the types of 11 API(s)

  PyPI · flask●breaks on upgrade
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  flask 1.0.2 → 3.1.3: removes 165 API(s)

  PyPI · flask●breaks on upgrade
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  gunicorn 19.9.0 → 26.2.0: changes the arguments of 4 function(s)

  PyPI · gunicorn●breaks on upgrade
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  gunicorn 19.9.0 → 26.2.0: changes parameters of 7 function(s)

  PyPI · gunicorn●breaks on upgrade19.9.0 → drop `sig=`, `frame=`, `server=`
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  gunicorn 19.9.0 → 26.2.0: changes the types of 20 API(s)

  PyPI · gunicorn●breaks on upgrade
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  gunicorn 19.9.0 → 26.2.0: removes 29 API(s)

  PyPI · gunicorn●breaks on upgrade19.9.0 → gunicorn.app.pasterapp.run → gunicorn.app.wsgiapp.run
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  gunicorn 22.0.0 → 26.2.0: changes the arguments of 1 function(s)

  PyPI · gunicorn●breaks on upgrade
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  gunicorn 22.0.0 → 26.2.0: changes parameters of 5 function(s)

  PyPI · gunicorn●breaks on upgrade
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  gunicorn 22.0.0 → 26.2.0: changes the types of 19 API(s)

  PyPI · gunicorn●breaks on upgrade
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  gunicorn 22.0.0 → 26.2.0: removes 10 API(s)

  PyPI · gunicorn●breaks on upgrade
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  httpx 0.27.2 → 0.28.1: changes parameters of 33 function(s)

  PyPI · httpx●breaks on upgrade0.27.2 → drop `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `cert=`, `proxies=`, `app=`, `proxies=`, `app=`, `http2=`
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  importlib-metadata 6.11.0 → 9.0.1: changes the types of 1 API(s)

  PyPI · importlib-metadata●breaks on upgrade
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  importlib-metadata 6.11.0 → 9.0.1: removes 1 API(s)

  PyPI · importlib-metadata●breaks on upgrade
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  importlib-resources 6.4.5 → 7.1.0: changes the types of 1 API(s)

  PyPI · importlib-resources●breaks on upgrade
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  importlib-resources 6.4.5 → 7.1.0: removes 12 API(s)

  PyPI · importlib-resources●breaks on upgrade
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  mypy 1.20.2 → 2.4.0: changes the arguments of 37 function(s)

  PyPI · mypy●breaks on upgrade
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  mypy 1.20.2 → 2.4.0: changes parameters of 66 function(s)

  PyPI · mypy●breaks on upgrade1.20.2 → drop `named_type=`, `named_type=`, `named_type=`, `num_patterns=`, `info=`, `custom_names=`, `oldfields=`, `var_name=`, `is_func_scope=`, `is_func_scope=`, `var_name=`, `is_func_scope=`, `table_fullname=`, `imports_only=`, `state=`, `is_func_scope=`, `is_func_scope=`, `ignore_errors=`, `id=`, `from_cache=`, `scc_id=`, `scc_id=`, `lookup=`, `scope=`, `lookup=`, `scope=`, `raise_on_error=`, `imports_only=`, `new_syntax=`, `scc=`, `correct_version=`, `line=`, `id=`, `skip=`, `attr=`, `func_name=`,
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  mypy 1.20.2 → 2.4.0: changes the types of 8 API(s)

  PyPI · mypy●breaks on upgrade
• 

  mypy 1.20.2 → 2.4.0: removes 43 API(s)

  PyPI · mypy●breaks on upgrade1.20.2 → mypy.typeops.get_protocol_member → mypy.messages.get_protocol_member
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  openai 0.28.1 → 3.35.1: changes the arguments of 3 function(s)

  PyPI · openai●breaks on upgrade
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  openai 0.28.1 → 3.35.1: changes parameters of 5 function(s)

  PyPI · openai●breaks on upgrade
• 

  openai 0.28.1 → 3.35.1: removes 63 API(s)

  PyPI · openai●breaks on upgrade
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  openai 0.28.1 → 3.36.1: changes the arguments of 3 function(s)

  PyPI · openai●breaks on upgrade