openai-agents-python

v0.18.1 Feature

This release adds 2 notable features for engineering teams evaluating rollout.

Published 17d AI Agents & Assistants

✓ No known CVEs patched

✓ No known CVEs patched in this version

Topics

agents ai harness llm openai python

Summary

AI summary

Updates Documentation & Other Changes, fix, and realtime across a mixed release.

Type	Severity	Summary	CVE
Feature	Medium	Adds GPT-5.6 model defaults and migrates examples. Adds GPT-5.6 model defaults and migrates examples. Source: llm_adapter@2026-07-16 Confidence: high	—
Performance	Medium	Accumulates streamed logprobs in place to avoid O(n^2) copies. Accumulates streamed logprobs in place to avoid O(n^2) copies. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix
Bugfix	Medium	Fixes cache-write usage across OpenAI Python versions. Fixes cache-write usage across OpenAI Python versions. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix	Medium	Makes session cleanup deterministic in realtime mode. Makes session cleanup deterministic in realtime mode. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix	Medium	Preserves nested tool state during restoration. Preserves nested tool state during restoration. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix	Medium	Closes Chat Completions streams on early exit. Closes Chat Completions streams on early exit. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix	Medium	Handles list content in AdvancedSQLiteSession browsing helpers. Handles list content in AdvancedSQLiteSession browsing helpers. Source: llm_adapter@2026-07-16 Confidence: high	—
Bugfix	Medium	Sends logprobs=True when top_logprobs is set on Chat Completions. Sends logprobs=True when top_logprobs is set on Chat Completions. Source: llm_adapter@2026-07-16 Confidence: high	—

Full changelog

feat: add GPT-5.6 model defaults and migrate examples by @seratch in https://github.com/openai/openai-agents-python/pull/3774
fix: support cache-write usage across OpenAI Python versions by @seratch in https://github.com/openai/openai-agents-python/pull/3773
fix(realtime): make session cleanup deterministic by @seratch in https://github.com/openai/openai-agents-python/pull/3767
fix: preserve nested tool state during restoration by @seratch in https://github.com/openai/openai-agents-python/pull/3753
fix: close Chat Completions streams on early exit by @fallintoplace in https://github.com/openai/openai-agents-python/pull/3689
fix(sessions): handle list content in AdvancedSQLiteSession browsing helpers by @anxkhn in https://github.com/openai/openai-agents-python/pull/3761
fix(models): accumulate streamed logprobs in place to avoid O(n^2) copies by @anxkhn in https://github.com/openai/openai-agents-python/pull/3762
fix: send logprobs=True when top_logprobs is set on Chat Completions by @winklemad in https://github.com/openai/openai-agents-python/pull/3763

docs: updates for v0.18.0 by @seratch in https://github.com/openai/openai-agents-python/pull/3741
docs(realtime): fix RealtimeRunner context docstring by @anxkhn in https://github.com/openai/openai-agents-python/pull/3748
docs: clarify agent tool state options by @william-xue in https://github.com/openai/openai-agents-python/pull/3754
test(items): document refusal None invariant by @seratch in https://github.com/openai/openai-agents-python/pull/3751
Release 0.18.1 by @github-actions[bot] in https://github.com/openai/openai-agents-python/pull/3775

@william-xue made their first contribution in https://github.com/openai/openai-agents-python/pull/3754
@winklemad made their first contribution in https://github.com/openai/openai-agents-python/pull/3763

Full Changelog: https://github.com/openai/openai-agents-python/compare/v0.18.0...v0.18.1

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About openai-agents-python

A lightweight, powerful framework for multi-agent workflows