--- title: "agentflow vs YiVal" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/simonmesmith-agentflow-vs-yival-yival" tools: ["simonmesmith-agentflow", "yival-yival"] --- # agentflow vs YiVal *GraphCanon updated Aug 24, 2026* ## Verdict Pick agentflow if agentflow simplifies the creation of complex workflows for large language models through simple JSON configurations; pick YiVal if yiVal is a Python-based tool focused on automatic prompting and fine-tuning for generative AI applications. [agentflow](https://github.com/simonmesmith/agentflow) reports 320 GitHub stars, 27 forks, and 13 open issues, last pushed Aug 11, 2023. [YiVal](https://yival.io/) has 2.1k stars, 329 forks, and 18 open issues, last pushed Apr 22, 2024. Figures are from public GitHub metadata via [agentflow's repository](https://github.com/simonmesmith/agentflow) and [YiVal's repository](https://github.com/YiVal/YiVal). | | [agentflow](/tools/simonmesmith-agentflow.md) | [YiVal](/tools/yival-yival.md) | | --- | --- | --- | | Tagline | Complex LLM Workflows from Simple JSON | Your Automatic Prompt Engineering Assistant for GenAI Applications | | Stars | 320 | 2,133 | | Forks | 27 | 329 | | Open issues | 13 | 18 | | Language | Python | Python | | Adopt for | Agentflow simplifies the creation of complex workflows for large language models through simple JSON configurations. | YiVal is a Python-based tool focused on automatic prompting and fine-tuning for generative AI applications. | | Persona | - | - | | Runtime | - | - | | License | MIT | Apache-2.0 | | Categories | AI Agents, LLM Frameworks | Evaluation & Observability, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [agentflow](/tools/simonmesmith-agentflow.md) | [YiVal](/tools/yival-yival.md) | | --- | --- | --- | | Days since push | 1100d | 853d | | Open issues (now) | 13 | 18 | | Stars delta | -1 (30d) | 0 (30d) | | Owner type | User | Organization | | Full report | [trust report](/tools/simonmesmith-agentflow/trust.md) | [trust report](/tools/yival-yival/trust.md) | ## Shared compatibility - **Python**: [agentflow](/tools/simonmesmith-agentflow.md) - Python runtime; [YiVal](/tools/yival-yival.md) - Python runtime ## Decision facts: agentflow - **Adopt for:** Agentflow simplifies the creation of complex workflows for large language models through simple JSON configurations. ## Decision facts: YiVal - **Adopt for:** YiVal is a Python-based tool focused on automatic prompting and fine-tuning for generative AI applications. ## Choose when ### Choose agentflow if… - License: agentflow is MIT, YiVal is Apache-2.0. - Tags unique to agentflow: json, large language models, python, workflow-management. - Also covers AI Agents. - When you need to rapidly prototype LLM workflows with minimal coding via JSON configs ### Choose YiVal if… - License: YiVal is Apache-2.0, agentflow is MIT. - Tags unique to YiVal: ai-experiments, auto-prompting, fine-tuning, generative-ai. - Also covers Evaluation & Observability. - When you need robust automation in prompt engineering which can help refine prompts for your specific use cases efficiently. ## When NOT to use agentflow - Avoid if requiring advanced customization that goes beyond basic JSON configurations - Not suitable for scenarios needing real-time dynamic changes in workflow setup during execution ## When NOT to use YiVal - If your project strictly relies on custom-built prompting mechanisms that are not amenable to automated adjustment processes. - For scenarios where human oversight is critical in every iteration of prompt adjustment and the team prefers a more hands-on approach to generative AI experimentation. ## Common questions ### What is the difference between agentflow and YiVal? agentflow: Complex LLM Workflows from Simple JSON. YiVal: Your Automatic Prompt Engineering Assistant for GenAI Applications. See the comparison table for live GitHub stats and shared categories. ### When should I choose agentflow over YiVal? Choose agentflow over YiVal when License: agentflow is MIT, YiVal is Apache-2.0; Tags unique to agentflow: json, large language models, python, workflow-management; Also covers AI Agents; When you need to rapidly prototype LLM workflows with minimal coding via JSON configs. ### When should I choose YiVal over agentflow? Choose YiVal over agentflow when License: YiVal is Apache-2.0, agentflow is MIT; Tags unique to YiVal: ai-experiments, auto-prompting, fine-tuning, generative-ai; Also covers Evaluation & Observability; When you need robust automation in prompt engineering which can help refine prompts for your specific use cases efficiently. ### When should I avoid agentflow? Avoid if requiring advanced customization that goes beyond basic JSON configurations Not suitable for scenarios needing real-time dynamic changes in workflow setup during execution ### When should I avoid YiVal? If your project strictly relies on custom-built prompting mechanisms that are not amenable to automated adjustment processes. For scenarios where human oversight is critical in every iteration of prompt adjustment and the team prefers a more hands-on approach to generative AI experimentation. ### Is agentflow or YiVal more popular on GitHub? YiVal has more GitHub stars (2,133 vs 320). Stars measure visibility, not whether either tool fits your constraints. ### Are agentflow and YiVal open source? Yes - both are open-source projects on GitHub (agentflow: MIT, YiVal: Apache-2.0). ### Where can I find alternatives to agentflow or YiVal? GraphCanon lists graph-backed alternatives at [agentflow alternatives](/tools/simonmesmith-agentflow/alternatives) and [YiVal alternatives](/tools/yival-yival/alternatives) ([agentflow markdown twin](/tools/simonmesmith-agentflow/alternatives.md), [YiVal markdown twin](/tools/yival-yival/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/simonmesmith-agentflow-vs-yival-yival.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, agentflow or YiVal? agentflow: Dormant. YiVal: Dormant. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for agentflow and YiVal? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [agentflow trust report](/tools/simonmesmith-agentflow/trust); [YiVal trust report](/tools/yival-yival/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=simonmesmith-agentflow`](/api/graphcanon/graph?tool=simonmesmith-agentflow) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_