ctxdexSynthetic model data for learning
Active modelOpen WeightReranking2Rerank

Ctxdex Retrieval 2 Rerank

Agent MakersCtxdex Retrieval

A second-generation reranking model in the Ctxdex Retrieval family for semantic reranking.

AcceptsStructured Data, TextProducesStructured DataReleasedAnnounced
View pricing

The pricing calculator is not yet built.

Data captured as of

Overview

Intended useBest suited for semantic reranking and structured-output workflows.
FamilyCtxdex RetrievalOpen retrieval family containing embedding and reranking models.
AnnouncedAnnounced
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 (1)

Structured Output
Intrinsic support for constrained/structured machine-readable output.

Tasks (1)

Semantic Reranking

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

  • Structured DataQuery Document Pair
  • TextPlain Text

Produces

  • Structured DataRelevance Score

Technical Characteristics

None recordedNo technical characteristic is recorded for this model.

Availability

Current offering available

Agent Makers

First Party Managed Api

Active offering
Effective from

Serving surfaces

Batch API · ActiveRerank API · Active

Nimbrex Cloud

Cloud Managed Model

Active offering
Effective from

Serving surfaces

Batch API · ActiveRerank API · Active

Oryventa Models

Hosted Open Model

Active offering
Effective from

Serving surfaces

Rerank API · Active

Runvora Inference

Serverless Inference

Active offering
Effective from

Serving surfaces

Rerank API · Active
Historical offeringsNone recorded
Downloadable distributionsNone recordedNo downloadable artefact has been published under these terms.

Serving Performance

Measured as of

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

Measurement basis Synthetic ProfileMetrics 12
MetricTypical valueConditions
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.235Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.225Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: BATCHProcessing Tier: STANDARDConcurrency Band: C1
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.200Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.205Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: BATCHProcessing Tier: STANDARDConcurrency Band: C1
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.230Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Completion Latency MsCompletion latency for a named, fixed workload profile.260Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.437.35Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.415.82Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.445.33Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.487.80Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: SYNCHRONOUSProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.478.30Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: BATCHProcessing Tier: STANDARDConcurrency Band: C1
Workload Units Per SecondThroughput in workload-profile-defined units per second.440.89Workload Unit Per Second
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: BATCHProcessing Tier: STANDARDConcurrency Band: C1

Pricing Reference

Reference offering

Agent Makers · First Party Managed Api

Effective fromCaptured as of
MeterBasisRate
Rerank ComparisonAudited rerank comparison rate$0.04 / 1000Unit
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.

3 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.

14 events4 scheduled ahead
  • Effective from
    PricingNormalUpcoming

    Agent Makers pricing scheduled

    Offering context: Agent Makers

    Scheduled to take effect on 2026-09-15. Not yet effective.

  • Effective from
    PricingNormalUpcoming

    Nimbrex Cloud pricing scheduled

    Offering context: Nimbrex Cloud

    Scheduled to take effect on 2026-09-15. Not yet effective.

  • Effective from
    PricingNormalUpcoming

    Oryventa Models pricing scheduled

    Offering context: Oryventa Models

    Scheduled to take effect on 2026-09-15. Not yet effective.

  • Effective from
    PricingNormalUpcoming

    Runvora Inference pricing scheduled

    Offering context: Runvora Inference

    Scheduled to take effect on 2026-09-15. Not yet effective.

  • Effective from
    AvailabilityNormal

    Nimbrex Cloud · Cloud Managed Model: Active

    Offering context: Nimbrex Cloud

    Synthetic commercial activation.

  • Effective from
    AvailabilityMajor

    Runvora Inference · Serverless Inference: Active

    Offering context: Runvora Inference

    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 of

Use conditions (0)

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

Lifecycle & Lineage

Direct lineage

None recordedNo lineage relationship is recorded for this model.

Recommended replacement for

None recordedNo replacement recommendation is recorded in either direction.

Lifecycle history: Active on 2026-06-23.

Similar Industry Models

Captured as of

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.

Qwen3-Reranker-8B

Alibaba/Qwen

Provider documentation
CloseOpen RerankerQuery Document Scoring

Selected as a close current reference for Ctxdex Retrieval 2 Rerank based on open reranker, query document scoring.

Checked 2026-09-14 · Medium confidence

Voyage Rerank 3

Voyage AI

Provider documentation
DirectRerankingQuery Document Scoring

Selected as a direct current reference for Ctxdex Retrieval 2 Rerank based on reranking, query document scoring.

Checked 2026-09-14 · High confidence

Cohere Rerank 4 Fast

Cohere

Provider documentation
CloseFast RerankingEnterprise Search

Selected as a close current reference for Ctxdex Retrieval 2 Rerank based on fast reranking, enterprise search.

Checked 2026-09-14 · High confidence

Comparison method CTXDEX_COMPARABLES_V1.

Resolved from the ctxdex catalogue at build time. Every figure is a stored value or a derivation named in the read model; nothing on this page is computed in the browser.