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Model infoModelsSnapshot: 15 Oct 2026

NEC / cotomi

cotomi v3

Enterprise cotomi generation with a longer shared context and improved task planning and tool selection. Available through NEC’s private deployment products.

availableClosed weightsText generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
8 of 20 specification fields collected
Context window128K128,000 tokens
Maximum outputNot collectedAwaiting source review
Input billingSee ratesNEC Express5800 for cotomi
Output billingSee ratesPublished units and conditions below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
128,000 tokensSource for Context / input limit (opens in a new tab)

NEC publishes 128K as the combined input/output context. K is displayed as 1,000 here; an exact tokenizer-specific integer ceiling is unverified.

Maximum input tokens
Not collected

128K is a shared input/output context, not a separately documented input maximum.

Maximum output
Not collected

No independent maximum generated-output allowance verified.

Reasoning
Not collected

Improved reasoning performance is described, but a configurable reasoning mode or reasoning-token contract is not established.

Tool calling
Not collected
Structured output
Not collected
Streaming
Not collected
Batch processing
Not collected
Fine-tuning
Not collected
Knowledge cutoff
Not collected
Release date
2025-07-08Source for Release date (opens in a new tab)

The technical journal identifies the July 2025 enhancement as v3; this is its announcement date.

Parameters
Not collected
Architecture
Not collected
Languages
JapaneseSource for Languages (opens in a new tab)

Documented focus; not an exhaustive language-support list.

Context caching
Not collected
Published price
Enterprise quotes; published v3 appliance software and support list prices in JPYSource for Published price (opens in a new tab)

This is private-deployment licensing, not a token-metered API.

Documented tool behavior
Improved task decomposition and tool selection; MCP integration in NEC’s agent offeringSource for Documented tool behavior (opens in a new tab)

A native function-calling wire format and self-service tool schema are not documented by this announcement.

Usage metering
Appliance list prices exclude tax. Hardware, framework, support, OS and deployment costs are additional; no cost per question can be derived.Source for Usage metering (opens in a new tab)

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

NEC Express5800 for cotomi

Provider source (opens in a new tab)
API model ID
Not collected

A public request model string and self-service API contract were not verified. The display name is not an API selector.

Access
Preinstalled cotomi model v3 software on the NEC appliance. A software SKU is not an inference API model ID.
Regions
Enterprise contract and deployment determine availability and data location.
Catalog identifier
UL4689-211-ISource for Catalog identifier (opens in a new tab)

cotomi model v3 appliance software SKU.

Pricing terms
June 2026 tax-exclusive suggested retail prices; framework, hardware and required support are separateSource for Pricing terms (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Appliance softwarecotomi model v3 license (UL4689-211-I)1¥12,000,000software license; term unspecified
Model supportStandard model support (ULH1S-4689002-I)1¥2,400,0001-year support package
Model supportStandard model support (ULH3S-4689002-I)1¥7,200,0003-year support package
Model supportStandard model support (ULH5S-4689002-I)1¥12,000,0005-year support package

Rate conditions

  1. NEC June 2026 Express5800 for cotomi guide, pages 51-52. Suggested retail price in JPY, excluding tax. cotomi model software alone is not a complete running deployment: framework, hardware, OS, required support and other infrastructure are extra. License term is not stated in the software row. Support packages below are alternatives by duration, not cumulative fees. No currency conversion or per-token estimate.
Pricing source (opens in a new tab)

Data & enterprise terms

Retention, training use, regional processing and enterprise terms have not been summarized for this endpoint.

NEC Government AI evaluation

Provider source (opens in a new tab)
API model ID
Not collected

A public request model string and self-service API contract were not verified. The display name is not an API selector.

Access
Selected for the Japanese government’s Gennai evaluation. Selection does not establish general public API access or an unrestricted trial.
Regions
Enterprise contract and deployment determine availability and data location.

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

Retention, training use, regional processing and enterprise terms have not been summarized for this endpoint.

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

NEC Express5800 for cotomi

Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

No verified cache rate for this endpoint. An empty rate is not a zero charge.

NEC Government AI evaluation

Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

No verified cache rate for this endpoint. An empty rate is not a zero charge.

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

NEC describes its proprietary, internally developed model delivered through enterprise products and services. No matching downloadable checkpoint was verified. Closed-weight classification is inferred for this product identity, not for every model developed by NEC.

Classification evidence (opens in a new tab)

Lifecycle dates

128K agent-focused generation announced8 Jul 2025Source (opens in a new tab)
Selected for Government AI trials9 Mar 2026Source (opens in a new tab)

Sources reviewed