Character.ai
Chat Memories (user-defined facts), auto-memories for c.ai+ subscribers, pinned memories, in-context retention. Latest chat models PipSqueak 3 and ShortSqueak (Sep 2026). On 2026-10-12 the company announced a voluntary Chapter 11 process for a court-supervised sale of all or substantially all assets (sale expected late Nov/early Dec 2026); the platform keeps running meanwhile and would be wound down if no viable bid emerges.
Shut down · Verified 2026-10-29 · fresh as of 2026-10-29 · 61 cited facts, 5 with a third-party source · 2 recorded changes · Suggest a correction
At a glance
- Type
- Layered: chat memories + auto-memories + pinned vendor fix
- Tier
- T1
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- Free + paid vendor fix
- Funding
- In voluntary Chapter 11 (announced 2026-10-12; notice of commencement 2026-10-15) to sell all or substantially all assets; previously $2.7B Google licensing deal (2024-08) vendor fix
- Freshness
- 2026-10-29 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
Memory taxonomy
- storage
- kv
- retrieval
- injection
- persistence
- long-term
- update
- extraction
- unit
- fact
- governance
- user-controllable
- conflict
- overwrite
When to use
Optimised for: character consistency + narrative continuity + low-latency
Anti-fit: not for non-character / non-narrative use cases
Pros & cons
Pros
Largest user base in the character-chat category — billions of messages, deep memory of long-running character relationships.
Cons
Memory model is opaque to users and devs; cross-platform export is not supported; recent strategic pivots add uncertainty.
Claims & capabilities
Hundreds of millions of users. Acquired Noam Shazeer team's tech (Google partnership).
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Managed-only
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- no MCP support advertised — vertical product, no MCP server / client integration documented
- A2A
- no A2A protocol support advertised — vertical product, no A2A integration documented
- OpenTelemetry
- no OpenTelemetry integration advertised — vendor logs/observability not publicly documented
Alternatives to Character.ai → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other vertical / domain-specific ai memory in the catalog, ranked by inbound references.
- Inworld AI T1
Formerly an NPC character engine with named Long-Term Memory; now sells realtime voice models (TTS-2, STT-1, speech-to-speech) and OpenAI-compatible open-model inference. Character/NPC memory is no longer the headline product.
- NVIDIA ReMEmbR T3
Builds long-horizon memory by captioning video segments with VILA, storing captions with timestamps + 3D position coordinates in MilvusDB. At query time, LLM iterates retrieval across text, time, and position modalities. Deployed on Nova Carter robot (Jetson Orin).
- Abridge T1
Clinician-assist ambient documentation. Source mapping: every AI-generated summary element traced back to the source utterance. Audit-and-trust layer over episodic memory. Built on proprietary 1.5M+ medical-encounter dataset.
- ASAPP GenerativeAgent T1
Treats memory as first-class architecture. Captures the digital footprint of every interaction; retrieves preference and history at engagement time. Public example: airline knowing a frequent flyer wants aisle seats with her son — preference-aware, not just history-lookup.
- BenevolentAI T1
Taken private: merged into Osaka Holdings (renamed BenevolentAI S.A.) and delisted from Euronext Amsterdam 2025-03-13. Target identification / drug repurposing / mechanism tracing. 85+ data sources, petabyte-scale, rebuilt every few weeks. Wet-lab results re-enter the graph and shift downstream predictions — institutional experimental memory closing a feedback loop. As of Oct 2026 benevolent.com leads with Qor, powered by BenevolentAI, a life-science intelligence service for biopharma decision makers and consultancies. Qor (qor.one) is a continuously updated decision-intelligence service built on BenevolentAI's knowledge graph and reasoning methods: it tracks evidence on an asset or indication (competitive position, rival readouts, comparable deals), source-verifies each claim and flags when an earlier conclusion stops holding. It targets biotech teams and life-science consultancies.
- Causaly T1
Agentic AI platform for life sciences: orchestrated scientific agents over a curated biomedical knowledge graph (plus Bio Graph and Pipeline Graph), an evidence-retrieval system and an enterprise data fabric over literature, trials and patents.
Sources (60 cited facts, 5 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Layered: chat memories + auto-memories + pinned vendor
- What it does & what's distinct Chat Memories (user-defined facts), auto-memories for c.ai+ subscribers, pinned memories… vendor
- Claims / benefits Hundreds of millions of users. Acquired Noam Shazeer team's tech (Google partnership). third-party
- Modalities text vendor
- Created 2023-03 third-party
- Mindshare 84 HN · 4 press vendor
- Funding In voluntary Chapter 11 (announced 2026-10-12; notice of commencement 2026-10-15) to sel… vendor
- Customers / scale 201-500 ppl no data (consumer - large MAU) third-party
- Pricing Free + paid vendor
- Compliance COPPA compliant (blocks under-13; restricted mode 13-17); GDPR-compliant; CCPA-compliant… vendor
- Data handling Opt-out available (character data used to improve models by default; users can request d… vendor
- Deployment Managed-only vendor
- HQ US third-party
- Founders / pedigree a16z / Google; co-founders Noam Shazeer (ex-Google Brain; co-author of 'Attention Is All… third-party
- Memory volume / scale internal — undisclosed (hundreds of millions of users) vendor
- Tombstoning hard-delete supported vendor
- Namespace primitives per-tenant vendor
- Contradiction handling always overwrite (last-write-wins) vendor
- Forgetting policy user-controlled forget vendor
- Webhooks / events no vendor
- Import / export Manual character JSON export vendor
- Validated verticals gaming (AAA + indie), interactive narrative, AI companions vendor
- Time to running <10min (SDK download / hosted API) vendor
- Anti-fit not for non-character / non-narrative use cases vendor
- Optimised for character consistency + narrative continuity + low-latency vendor
- Adjacent infrastructure requires game engine integration (Unity / Unreal); BYO LLM vendor
- Pros Largest user base in the character-chat category — billions of messages, deep memory of … vendor
- Cons Memory model is opaque to users and devs; cross-platform export is not supported; recent… vendor
- Project & sources character.ai vendor
- obs-langsmith no vendor
- obs-opentelemetry no vendor
- obs-datadog no vendor
- obs-helicone no vendor
- obs-weave no vendor
- obs-langfuse no vendor
- obs-arize no vendor
- obs-custom Closed consumer product — no developer observability surface vendor
- cost-token-budget no vendor
- cost-prompt-caching no vendor
- cost-semantic-caching no vendor
- cost-batching no vendor
- cost-model-routing no vendor
- cost-streaming-only no vendor
- cost-observability-cost-attribution no vendor
- eval-langsmith-evals no vendor
- eval-braintrust no vendor
- eval-weights-and-biases-agent no vendor
- eval-helicone-evals no vendor
- eval-custom-test-harness no vendor
- eval-human-loop yes vendor
- eval-production-traffic-replay no vendor
- cost-input-usd-per-mtok 0 vendor
- cost-output-usd-per-mtok 0 vendor
- cost-tier free vendor
- cost-pricing-model free-tier vendor
- cost-last-verified 2026-06-29 vendor
- architecture-deployment-locus cloud 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)
- 2026-10-23
- Funding / ownership “In Chapter 11 (filed Oct 2026) pursuing court-supervised asset sale; previously $2.7B Google licensing deal (2024-08)” → “In voluntary Chapter 11 (announced 2026-10-12; notice of commencement 2026-10-15) to sell all or substantially all assets; previously $2.7B Google licensing deal (2024-08)” source
- Compliance “COPPA compliant (blocks under-13; restricted mode 13-17); GDPR-compliant; CCPA-compliant; AES-256 encryption; Jan 2…” → “COPPA compliant (blocks under-13; restricted mode 13-17); GDPR-compliant; CCPA-compliant; AES-256 encryption” source
- 2026-10-22
- Funding / ownership “$2.9B total $2.5B val License (Google) · 2024-08” → “In Chapter 11 (filed Oct 2026) pursuing court-supervised asset sale; previously $2.7B Google licensing deal (2024-08)” source