The model landscape in kiweely

One of kiweely's core design tenets is provider independence. You are never locked into a single AI vendor or inflexible proprietary engine.

In kiweely, your conversations can be powered by three distinct AI provider pathways:

  1. ChatGPT (via the Codex Engine): Sign in with your OpenAI subscription (Plus, Pro, Team, or Enterprise).
  2. Claude (via Claude Code): Connect your Anthropic Claude plan (Pro or Team) through the local Claude Code integration.
  3. OpenRouter: Bring your own API key to route requests across frontier models from OpenAI, DeepSeek, xAI, and open-weight models with per-token billing.

Because kiweely wraps all models in the same Trust Layer—enforcing strict tenant boundaries, explicit action approval cards, and Chrome browser verification—your data security remains identical regardless of which model you choose. However, different models offer distinct strengths in reasoning depth, code generation, speed, and narrative tone.

The active model roster in kiweely

kiweely supports the latest generation of frontier reasoning and coding engines:

AI Engine Taxonomy & The Workday Trust Layer Frontier reasoning models enveloped by strict tenant boundaries and action approvals
kiweely Trust Layer: Actions Require Approval • Tenants Strictly Scoped • Local CDP Browser Proof
ChatGPT Codex Engine · Subscription
GPT-5.6-Sol Fast daily driver · WQL queries & scripts
GPT-5.6-Terra Large Extend app scaffolding & data mapping
GPT-6-Astra Frontier reasoning · Configurable effort (low to max)
Claude Claude Code Engine · Subscription
Claude Sonnet 5 Versatile workhorse · DESIGN.md docs & Extend UI
Claude Opus 5.5 Deep architectural analysis & security audits
Haiku Fast utility · Background indexing & titling
OpenRouter BYOK · Multi-Vendor Roster
DeepSeek V4 Pro High-efficiency logic & mathematical code
DeepSeek V4 Flash High-throughput log parsing & data checks
xAI Grok 4.6 Massive context handling & analytical review

Matching Workday tasks to the optimal engine

Workday Task Recommended Model Effort / Setting Rationale
Full Extend App Scaffolding (AMD + PMD) GPT-5.6-Terra or Claude Sonnet 5 Medium Strict adherence to Workday presentation schema and event structures across multiple files.
Complex Orchestration & Log Debugging GPT-6-Astra or Claude Opus 5.5 High / Max Exceptional multi-step causal reasoning across routing, data transforms, and API payloads.
WQL Query Building & Field Audits GPT-5.6-Sol or Claude Sonnet 5 Default / Low Instant response time, high accuracy on Workday aliases, data sources, and filter expressions.
Template Deliverables (Word / PPTX / PDF) Claude Sonnet 5 Medium Natural consulting tone, flawless alignment with Google DESIGN.md tokens, and clean layout mapping.
Tenant Security & Domain Access Audits Claude Opus 5.5 or GPT-6-Astra High Disentangles complex intersections between functional areas, security groups, and user permissions.
Large Log Ingestion & Data Migration Checks DeepSeek V4 Flash (OpenRouter) Standard Ultra-fast processing speed and low cost for parsing extensive raw log exports.

Practical tips for managing models

1. Use reasoning effort deliberately

Models such as GPT-6-Astra and Claude Opus 5.5 support configurable reasoning effort (low, medium, high, xhigh, max):

  • Set to low or medium for daily Workday queries, single-field fixes, and WQL authoring.
  • Set to high or max when architecting a new multi-endpoint Orchestration or debugging persistent validation failures.

2. Bring your existing plan

If your organization already provides a ChatGPT Team or Claude Pro subscription, sign in directly in Settings. kiweely leverages your existing seat without requiring additional metered token costs.

3. Seamless provider switching

kiweely preserves your conversation history and project files when switching models. You can scaffold an Extend app with GPT-5.6-Terra and switch to Claude Sonnet 5 to produce the client's branded PowerPoint deck under their template.

The takeaway

The question is never which model is universally superior. The advantage in kiweely is having the right reasoning engine matched to the exact Workday challenge at hand—all operating safely inside your verified tenant boundaries.