Neptune 27B is in training
ainferaHugging FacePublic cards N/A

The AI-native
model factory.

Ainfera is building Neptune 27B, an open-weight model for agentic systems. It is designed for native tool use, persistent state, long-horizon execution, and recovery.

PhilosophyWhitepaper
Neptune 27B

The whole episode is the unit of work.

Neptune 27B is an open dense, approximately 27-billion-parameter model for agent systems. Its product definition joins model identity, agent-native behavior, deployment intent, and an evaluation record.

Neptune 27B model registerA restrained parameter register describing Neptune 27B as an open dense, agent-native model with public benchmark values pending.MODEL REGISTER / NEPTUNE 27BOPEN DENSE / AGENT-NATIVESYSTEM ENVELOPE / PRIVATE DEPLOYMENTPUBLIC RESULT / N/APARAMETER SIGNAL / DECLARATIVE VIEWNOT A PERFORMANCE MEASUREMODEL CLASS27BAPPROXIMATE PARAMETER CLASSSYSTEM INTERFACEAGENT-NATIVEDEPLOYMENT INTENTPRIVATE SYSTEMSPUBLIC RESULTSN/ATOOLSSTATERECOVERY
Benchmark

No number without its conditions.

Public benchmark data for Neptune 27B is N/A. When results are available, every value will carry the exact model, suite, runtime, date, and uncertainty needed to interpret it.

Evaluation register / Neptune 27BRelease field · values publish only with complete conditions
Public stateN/A
01 / AFRAgent finish rateComplete task episodes
N/A
02 / TJVTool JSON validitySchema-valid calls and arguments
N/A
03 / RAFRecovery after failureRepair after rejected or malformed calls
N/A
04 / THRThrash ratioRepeated or unnecessary action loops
N/A
05 / VACVAC per cost and timeValue-adjusted completion by envelope
N/A
01ModelExact revision
02SuiteNamed workload
03RuntimeHost and format
04DateObserved window
05ResultObserved or N/A
Agentic

One objective across the episode.

A useful agent must keep intent, state, tool outputs, and recovery connected. Neptune treats the task as a continuous system, not a stack of isolated replies.

Agent episode ledgerA continuous episode register connecting tool use, persistent state, and recovery to one retained objective.EPISODE LEDGER / ONE OBJECTIVEACTION → OBSERVATION → REPAIRAGENT-NATIVE SYSTEM CONTRACTSTATE REMAINS ATTACHEDEPISODE 01 / CONTINUITY REGISTERFAILED PATHS REMAIN INSPECTABLE01 / TOOL USE02 / RETAIN STATE03 / RECOVERYCALLHOLDREPAIROBJECTIVE RETAINED ACROSS THE FULL EPISODE
01 / protocolTool use

Calls tools without translation.

Prompts, schemas, arguments, observations, and results remain explicit across the exchange.

02 / stateContinuity

Keeps the objective alive.

Plans and state transitions remain connected to the original task across multiple steps.

03 / recoveryRecovery

Repairs inside the task.

Rejected calls and failed paths stay inspectable, so the agent can correct and continue.

Open the Neptune 27B model card

Built by agents, for agents.

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