Ctxdex Foundation 3 Base

Overview

Intended useBest suited for general language generation.

FamilyCtxdex FoundationOpen foundation language-model family with Base/Instruct model identities.

AnnouncedAnnounced2025-02-11

DeprecatedNot applicableModel is current.

RetiredNot applicableModel is not retired.

What it does

Capabilities carry their support status; tasks are labels, because seven descriptions would bury the section.

Capabilities (0)

None recordedNo capability is recorded for this model.

Tasks (1)

General Language Generation

Inputs & Outputs

Each modality is paired with the representation it is carried in, so a non-token model reads the same way a text one does.

Accepts

TextPlain Text

Produces

TextPlain Text

Technical Characteristics

A characteristic with no value states why it has none. An absence here is a recorded fact, not a gap in the page.

Maximum context tokens128000

Maximum native output tokens12000

Architecture classDENSE_TRANSFORMER

Parameter count68.000000000000000000

Availability

Current offering available

Nimbrex Cloud

Cloud Managed Model

Active offering

Effective from2025-03-24

Serving surfaces

Batch API · ActiveInference API · Active

Oryventa Models

Hosted Open Model

Active offering

Effective from2025-03-21

Serving surfaces

Inference API · Active

Runvora Inference

Serverless Inference

Active offering

Effective from2025-03-20

Serving surfaces

Inference API · Active

Historical offeringsNone recorded

Downloadable distributions3

Distributions

A downloadable artefact under this model's licence. Format, precision and size are properties of the artefact, not of the model.

Open Weights

Available distribution

SAFETENSORSBF16136.5 GB

Available from2025-02-25

Optimized Package

Deprecated distribution

SAFETENSORSFP8FP869.2 GB

Available from2025-04-08

Optimized Package

Available distribution

GGUFINT4Q4_K_M38.6 GB

Available from2026-04-14

Serving Performance

Measured as of2026-09-07

Every figure is measured under the conditions beside it. Read without them, a latency number claims more than it can.

Measurement basis Synthetic ProfileMetrics 6

Metric	Typical value	Conditions
Output Tokens Per SecondSteady generated text-token rate after first token.	78.6Token Per Second	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGProcessing Tier: STANDARDConcurrency Band: C1Output Size Band: ~512_TOKENS
Output Tokens Per SecondSteady generated text-token rate after first token.	93.7Token Per Second	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGProcessing Tier: STANDARDConcurrency Band: C1Output Size Band: ~512_TOKENS
Output Tokens Per SecondSteady generated text-token rate after first token.	86.7Token Per Second	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGProcessing Tier: STANDARDConcurrency Band: C1Output Size Band: ~512_TOKENS
Time To First Token MsLatency from accepted request/start of generation to first generated text token.	300Ms	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGInput Size Band: ~4K_TOKENSProcessing Tier: STANDARDConcurrency Band: C1
Time To First Token MsLatency from accepted request/start of generation to first generated text token.	270Ms	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGInput Size Band: ~4K_TOKENSProcessing Tier: STANDARDConcurrency Band: C1
Time To First Token MsLatency from accepted request/start of generation to first generated text token.	250Ms	Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGInput Size Band: ~4K_TOKENSProcessing Tier: STANDARDConcurrency Band: C1

Pricing Reference

Reference offering

Nimbrex Cloud · Cloud Managed Model

Effective from2026-09-15Captured as of2026-09-14

Meter	Basis	Rate
Input	Audited base input-token rate	$0.36 / 1000000Token
Output	Audited base output-token rate	$1.35 / 1000000Token
Cached Input	Audited base cached-input-token rate	$0.036 / 1000000Token

View all pricing

Full pricing for a single offering is one step further in, from this model’s pricing page, because it is addressed by offering and this page carries the model. The calculator is disabled because it is not built.

2 other current offerings are priced separately. This is the publisher's own offering, chosen as the reference — it is not the cheapest by definition. Rates are not comparable across offerings unless meter, unit and conditions match.

Derived chronology

Model Journey

Assembled from this model’s own lifecycle records, its snapshots, its providers’ offering and pricing history, and recorded succession. It is a view over those records, not a second source of truth, and undated lineage is deliberately not on it.

13 events3 scheduled ahead

Effective from 2026-09-15
PricingNormalUpcoming
Nimbrex Cloud pricing scheduled
Offering context: Nimbrex Cloud
Scheduled to take effect on 2026-09-15. Not yet effective.
Effective from 2026-09-15
PricingNormalUpcoming
Oryventa Models pricing scheduled
Offering context: Oryventa Models
Scheduled to take effect on 2026-09-15. Not yet effective.
Effective from 2026-09-15
PricingNormalUpcoming
Runvora Inference pricing scheduled
Offering context: Runvora Inference
Scheduled to take effect on 2026-09-15. Not yet effective.
Effective from 2026-01-01
PricingNormal
Nimbrex Cloud pricing became effective
Offering context: Nimbrex Cloud
Version current, effective from 2026-01-01.
Effective from 2026-01-01
PricingNormal
Runvora Inference pricing became effective
Offering context: Runvora Inference
Version current, effective from 2026-01-01.
Effective from 2025-04-11
AvailabilityNormal
Oryventa Models · Hosted Open Model: Active
Offering context: Oryventa Models
Synthetic commercial activation.

Open full journey →

The first control expands this section in place, without filters or navigation. The second opens the standalone journey, which adds filtering on three axes, year grouping, per-event provenance and a shareable address.

Every date is the source record’s own effective date — a model lifecycle date, a snapshot release, an offering’s effective date, a pricing version’s effective-from. None of them is a load or capture timestamp.

Licence & Use Conditions

LicenceAgent Makers Open Weight License

Version1.0

SPDX identifierNot applicableNo SPDX identifier is recorded for these terms.

Legal textNo public URI recordedThe terms exist and are held internally; no public address has been published.Captured as of2026-09-07

Use conditions (0)

None recordedNo condition constrains use of this model beyond its licence.

Lifecycle & Lineage

Direct lineage

Derived From of

Ctxdex Foundation 3 Instruct

Derived From of

Ctxdex Yantra 2 On-Device

Derived From of

Ctxdex Chintana 1 Large

Successor Of

Ctxdex Foundation 2 Base

Recommended replacement for

None recordedNo replacement recommendation is recorded in either direction.

Lifecycle history: Active on 2025-02-25.

Similar Industry Models

Captured as of2026-09-14

A positioning reference, not an equivalence claim. Each row states the axes it was drawn on, and covers only that part of this model's positioning.

Mistral Large 3

Mistral AI

Provider documentation

CloseOpen WeightLarge General Model

Differences recorded: Instruct Api Surface.

Selected as a close current reference for Ctxdex Foundation 3 Base based on open weight, large general model.

Checked 2026-09-14 · High confidence

Gemma 4 31B

Google

Provider documentation

ReferenceOpen ModelLarge Model

Selected as a reference current reference for Ctxdex Foundation 3 Base based on open model, large model.

Checked 2026-09-14 · Medium confidence

Qwen3.5-35B-A3B

Alibaba Cloud

Provider documentation

ReferenceOpen ModelEfficient Moe

Differences recorded: Instruct Oriented.

Selected as a reference current reference for Ctxdex Foundation 3 Base based on open model, efficient moe.

Checked 2026-09-14 · High confidence

Comparison method CTXDEX_COMPARABLES_V1.