docs(library): update byok-multi-model-ai-agent-builder - #8323
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| ## What does BYOK mean in an AI agent builder? | ||
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| A BYOK multi-model AI agent builder is a platform that lets you build AI agents while supplying your own provider API keys, so you route work to whichever model you choose instead of being tied to one vendor's models. BYOK stands for bring-your-own-key. You connect an account you already hold with a provider like OpenAI, Anthropic, or Google, and the platform runs your agents against that account rather than reselling access through its own keys. | ||
| Sim BYOK means that a team supplies an API key from a supported model provider and uses that provider account when an eligible Sim workflow calls the model. Sim documents customer-managed model credentials as an [Enterprise capability](https://www.sim.ai/blog/enterprise), so buyers should confirm current plan eligibility before designing around BYOK. |
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| | Hosted access | Sim manages the applicable provider access | Usage is governed by the current Sim plan and its applicable metering | At the hosted provider selected through Sim | Availability, included usage, and limits depend on the current plan | | ||
| | BYOK | The customer supplies a supported provider API key | The model provider bills the customer under the provider account; separate Sim plan charges may still apply | At the external provider connected with the key | BYOK is not local inference and does not eliminate provider token charges | | ||
| | Enterprise-only local-model access | Determined through an approved Enterprise deployment | Determined by the Enterprise architecture, infrastructure, and contract | In the approved Enterprise environment | Local-model access must not be assumed to exist on regular Sim plans | |
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| Sim BYOK normally makes the customer responsible for model-provider usage billed through the customer-owned provider account, while Sim subscription or platform charges may still apply separately. | ||
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| OpenAI's own stack has the opposite strength. You get tight integration with frontier models and first-party tooling, which matters when you are building squarely on GPT and want the shortest path to production. | ||
| BYOK should not be described as “free tokens” or “zero token cost.” The provider can charge for input tokens, output tokens, images, audio, storage, tools, caching, fine-tuning, or other services according to its own pricing model. Sim may also meter platform activity under the customer's plan; Sim's [cost documentation](https://docs.sim.ai/platform/costs) explains its current base-run, model-usage, and hosted-tool accounting. |
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Content update to
apps/sim/content/library/byok-multi-model-ai-agent-builder: Refresh the existing library post in place at /library/byok-multi-model-ai-agent-builder; do not change its URL or title. Use the supplied article as the revised structure and copy. During implementation, retain every still-valid sourced fact, figure, image, and citation from the existing post because the Gauge brief explicitly requires preservation; place each retained asset beside the corresponding refreshed section. Remove or qualify any old statement that implies Ollama or local models are available on regular plans, that BYOK eliminates token costs, or that data never leaves the machine. Keep the three access modes strictly separated: hosted access, customer-owned provider keys through BYOK, and approved Enterprise-only local-model access. Before publication, verify current Sim provider support, hosted-access limits, BYOK plan eligibility, credential behavior, and Enterprise deployment language against current first-party Sim documentation. Recheck the linked Sim and n8n license pages, retaining the 'As of September 2026' date for changing third-party claims. Migrate every FAQ question and answer exactly as plain text into the renderer's FAQ frontmatter; do not add links, emphasis, or other Markdown inside FAQ entries. Preserve the canonical routing link to /library/best-ai-agent-builder-2026 and do not reposition this page to compete for the 'best AI agent builder' head term.