OpenAI Codex Memories + Chronicle
https://learn.chatgpt.com/docs/customization/memories
Codex Memories carries preferences, conventions and pitfalls across Codex threads as local memory files. The Chronicle research preview has been replaced by Computer History, a rebuilt macOS desktop feature (ChatGPT Pro, Business, Enterprise; off by default) that turns interaction events and accessibility text from allowed apps and websites, without screenshots or audio, into summaries, local memory files and a timeline that ChatGPT and Codex can reference. Traction: OpenAI first-party feature for the Codex app; wide press coverage
Active · Verified 2026-10-29 · fresh as of 2026-10-29 · 12 cited facts, 0 with a third-party source · 2 recorded changes · Suggest a correction
At a glance
- Tier
- T3
- Section
- Coding-agent memory
- Created
- searched not found fix
- Latest release
- searched not found fix
- License
- proprietary vendor fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- searched not found fix
- Funding
- searched not found fix
- Freshness
- 2026-10-29 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
Memory taxonomy
- storage
- file
- retrieval
- injection
- persistence
- long-term
- update
- extraction
- unit
- fact
- governance
- user-controllable
- conflict
- none
When to use
Optimised for: searched not found
Anti-fit: searched not found
Pros & cons
Pros
searched not found
Cons
searched not found
Claims & capabilities
Start with a goal, idea, or task. ChatGPT can gather context, take action, and produce something useful.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- searched not found
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- searched not found
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to OpenAI Codex Memories + Chronicle → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other coding-agent memory in the catalog, ranked by inbound references.
- Devin (Cognition) T1
Structured Knowledge items stored server-side. Three-tier scope: repo-pinned (always injected), global (recall by relevance), org/enterprise (visible to org members). Auto-generates Repo Knowledge from repo structure each session; reads past session trajectories for self-improvement; writes notes for recurring scheduled tasks.
- Aider T2
Appends conversation turns to .aider.chat.history.md in project root. restore_chat_history defaults to false — no automatic replay into new sessions. Community /session save command for JSON state snapshots. .aider.conf.yml carries static preferences.
- Augment Code T1
Real-time knowledge graph indexed from connected repos + commit history + CI/CD + tickets + docs. Separate Agent Memory layer (Sept 2025) captures session decisions/corrections/goals as discrete items with developer review/approval UI. MCP endpoint exposes the graph. Acquired by Harness (2026-10-08): Harness bought select Augment Code assets, including Cosmos, the Auggie CLI and the Context Engine, and the team joined Harness. augmentcode.com now leads with Cosmos, a software-factory agent platform.
- Letta Code T3
Letta's stateful coding-agent harness: agents rewrite their own memory blocks and skills, version context in git via MemFS (syncable to GitHub) and reflect via a periodic /sleeptime 'dreaming' process. from Letta (MemGPT) team. letta-ai/letta-code is now the main Letta source (harness, terminal UI, App Server, channels); the Letta V1 API server was retired to the archive branch of letta-ai/letta.
- Replit Agent T1
No documented built-in persistent semantic memory store. Session duration expanded to 200 min (Agent 3); Agent 4 shifts toward persistent runtimes. Temporal used for orchestration durability, not semantic memory. Cross-session memory relies on filesystem + agent-written notes.
- agentmemory (rohitg00) T3
Self-hosted persistent memory layer that captures coding-agent activity and recalls it in later sessions, positioned on public benchmark results. #7 in TeleAI Awesome-Agent-Memory
Sources (11 cited facts, 0 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Product vendor
- What it does & what's distinct Codex Memories carries preferences, conventions and pitfalls across Codex threads as loc… vendor
- Claims / benefits Start with a goal, idea, or task. ChatGPT can gather context, take action, and produce s… vendor
- License proprietary vendor
- Project & sources https://developers.openai.com/codex vendor
- cost-prompt-caching yes vendor
- cost-model-routing yes vendor
- architecture-deployment-locus hybrid vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)