ctxdexSynthetic model data for learning
Active modelProprietaryGeneral Purpose4Pro

Ctxdex Intelligence 4 Pro

Agent MakersCtxdex Intelligence

A fourth-generation Pro multimodal general-purpose model in the Ctxdex Intelligence family for complex reasoning, multi-step software engineering, code generation, and code editing and refactoring.

AcceptsImage, TextProducesTextReleasedAnnounced
View pricing

The pricing calculator is not yet built.

Data captured as of

Overview

Intended useBest suited for complex reasoning, multi-step software engineering, code generation, code editing and refactoring, general language generation, multimodal understanding, and tool-enabled workflows.
FamilyCtxdex IntelligenceConcentrated frontier-intelligence family spanning persistent capability/cost tiers.
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 (3)

Explicit Reasoning
Intrinsic explicit/deliberate reasoning support.
Structured Output
Intrinsic support for constrained/structured machine-readable output.
Tool Calling
Intrinsic support for requesting/invoking external tools/functions.

Tasks (6)

Agentic Software EngineeringCode EditingCode GenerationComplex ReasoningGeneral Language GenerationMultimodal Understanding

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

  • ImageRaster Image
  • TextChat Messages

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.

Knowledge/training cutoff2025-11-01
Maximum context tokens512000
Maximum native output tokens32000
Architecture classDENSE_TRANSFORMER
Parameter countUnknown

Versions & Snapshots

Latest

Opening a snapshot shows what it resolves to. It does not switch this page into snapshot mode — the model's own values stay in place.

SnapshotReleasedStatusDetail
2026-06-09Active snapshot
2026-02-17Active snapshot

Availability

Current offering available

Agent Makers

First Party Managed Api

Active offering
Effective from

Serving surfaces

Batch API · ActiveInference API · Active

Nimbrex Cloud

Cloud Managed Model

Active offering
Effective from

Serving surfaces

Batch API · ActiveInference 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 4
MetricTypical valueConditions
Output Tokens Per SecondSteady generated text-token rate after first token.84.3Token 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.74.3Token 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.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.310Ms
Capacity Mode: SHARED_ON_DEMANDDelivery Mode: STREAMINGInput Size Band: ~4K_TOKENSProcessing Tier: STANDARDConcurrency Band: C1

Pricing Reference

Reference offering

Agent Makers · First Party Managed Api

Effective fromCaptured as of
MeterBasisRate
InputAudited base input-token rate$2.6 / 1000000Token
OutputAudited base output-token rate$12.5 / 1000000Token
Cached InputAudited base cached-input-token rate$0.26 / 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.

1 other current offering is 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 events2 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
    SnapshotNormal

    Snapshot 2026-06-09 released

  • Effective from
    PricingNormal

    Agent Makers pricing became effective

    Offering context: Agent Makers

    Version current, effective from 2026-04-01.

  • Effective from
    PricingNormal

    Nimbrex Cloud pricing became effective

    Offering context: Nimbrex Cloud

    Version current, effective from 2026-04-01.

  • Effective from
    AvailabilityMajor

    Nimbrex Cloud · Cloud Managed Model: Active

    Offering context: Nimbrex Cloud

    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 Proprietary Model Terms
Version1.0
SPDX identifierNot applicableSPDX identifies open-source licences; these are proprietary 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

Successor Of

Ctxdex Intelligence 2 Pro

Recommended replacement for

Replacement for

Ctxdex Intelligence 2 Pro

Effective from

Replacement for

Ctxdex Intelligence 3 Balanced

Effective from

Lifecycle history: Active on 2026-02-17.

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.

Claude Sonnet 5

Anthropic

Provider documentation
CloseAgentic WorkSoftware EngineeringCodingProfessional Work

Selected as a close current reference for Ctxdex Intelligence 4 Pro based on agentic work, software engineering, coding, professional work.

Checked 2026-09-14 · High confidence

GPT-5.6 Sol

OpenAI

Provider documentation
CloseComplex ReasoningCodingTool Use

Selected as a close current reference for Ctxdex Intelligence 4 Pro based on complex reasoning, coding, tool use.

Checked 2026-09-14 · High confidence

Gemini 3.1 Pro

Google

Provider documentation
CloseMultimodal ReasoningAgents

Selected as a close current reference for Ctxdex Intelligence 4 Pro based on multimodal reasoning, agents.

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.