Comparison
pydantic-ai-shields vs circle-guard-bench
Verdict
Pick pydantic-ai-shields if pydantic-ai-shields is specialized to enforce safety guardrails for Pydantic AI tools with features like cost tracking, prompt injection detection, PII filtering, secret redaction, tool permissions, and async guardrails; pick circle-guard-bench if circle-guard-bench is a Python-based AI benchmark tool for evaluating large language model guard systems under various protection scenarios.
Markdown twin · pydantic-ai-shields alternatives · circle-guard-bench alternatives
GraphCanon updated Sep 13, 2026
15views this month
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Trust & integrity
| Signal | pydantic-ai-shields | circle-guard-bench |
|---|---|---|
| Maintenance | Very active (2d since push) As of Sep 13, 2026 · github_public_v1 | Slowing (185d since push) As of Sep 9, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 13, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 9, 2026 · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of Jul 15, 2026 · osv@v1 | No lockfile (source not queried) As of Jul 15, 2026 · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- pydantic-ai-shields
- Guardrail capabilities for Pydantic AI
- circle-guard-bench
- AI benchmark for evaluating LLM guard systems
Stars
- pydantic-ai-shields
- 93
- circle-guard-bench
- 75
Forks
- pydantic-ai-shields
- 11
- circle-guard-bench
- 5
Open issues
- pydantic-ai-shields
- 3
- circle-guard-bench
- 1
Language
- pydantic-ai-shields
- Python
- circle-guard-bench
- Python
Adopt for
- pydantic-ai-shields
- pydantic-ai-shields is specialized to enforce safety guardrails for Pydantic AI tools with features like cost tracking, prompt injection detection, PII filtering, secret redaction, tool permissions, and async guardrails.
- circle-guard-bench
- circle-guard-bench is a Python-based AI benchmark tool for evaluating large language model guard systems under various protection scenarios.
Persona
- pydantic-ai-shields
- -
- circle-guard-bench
- -
Runtime
- pydantic-ai-shields
- -
- circle-guard-bench
- -
License
- pydantic-ai-shields
- MIT
- circle-guard-bench
- Apache-2.0
Last pushed
- pydantic-ai-shields
- Sep 10, 2026
- circle-guard-bench
- Mar 7, 2026
Categories
- pydantic-ai-shields
- Evaluation & Observability
- circle-guard-bench
- Evaluation & Observability
Trust and health
Maintenance
- pydantic-ai-shields
- Very active (96%)
- circle-guard-bench
- Slowing (36%)
Days since push
- pydantic-ai-shields
- 2d
- circle-guard-bench
- 185d
Open issues (now)
- pydantic-ai-shields
- 3
- circle-guard-bench
- 1
Stars delta
- pydantic-ai-shields
- +2 (30d)
- circle-guard-bench
- +3 (30d)
Open issues delta
- pydantic-ai-shields
- +2 (30d)
- circle-guard-bench
- +1 (30d)
Full report
- pydantic-ai-shields
- Trust report
- circle-guard-bench
- Trust report
Shared compatibility
- Python · pydantic-ai-shields: Python runtime · circle-guard-bench: Python runtime
Choose pydantic-ai-shields if…
- License: pydantic-ai-shields is MIT, circle-guard-bench is Apache-2.0.
- Tags unique to pydantic-ai-shields: ai-agents, ai-guardrails, ai-safety, input-validation.
- When you need type-safe integrations with Pydantic and want built-in capabilities via pydantic-ai's native API
When NOT to use pydantic-ai-shields
- If your project already relies on a different framework that does not integrate well with Pydantic
- When you require detailed content moderation functionalities beyond simple PII filtering and secret redaction
Choose circle-guard-bench if…
- License: circle-guard-bench is Apache-2.0, pydantic-ai-shields is MIT.
- Tags unique to circle-guard-bench: ai, benchmarking, guardrail, large language models.
- Use circle-guard-bench when you need to evaluate the effectiveness of guardrails and safeguards in your LLM environment, as it offers an unparalleled set of scenarios specific to these protections.
When NOT to use circle-guard-bench
- Avoid circle-guard-bench if your primary focus is on benchmarking the performance aspects like speed and latency of LLMs, as it specializes in evaluating protections rather than performance.
- Do not use this tool when you intend to conduct general purpose evaluations or comparisons between different LLM models that do not specifically involve security-related guard systems.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (vstorm-co/pydantic-ai-shields) · observed Sep 13, 2026
- GitHub forks (vstorm-co/pydantic-ai-shields) · observed Sep 13, 2026
- Last push (vstorm-co/pydantic-ai-shields) · observed Sep 10, 2026
- License file (MIT) · observed Sep 13, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (whitecircle/circle-guard-bench) · observed Sep 9, 2026
- GitHub forks (whitecircle/circle-guard-bench) · observed Sep 9, 2026
- Last push (whitecircle/circle-guard-bench) · observed Mar 7, 2026
- License file (Apache-2.0) · observed Sep 9, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: pydantic-ai-shields 93 · circle-guard-bench 75 (synced Sep 13, 2026).
Common questions
- What is the difference between pydantic-ai-shields and circle-guard-bench?
- pydantic-ai-shields: Guardrail capabilities for Pydantic AI. circle-guard-bench: AI benchmark for evaluating LLM guard systems. See the comparison table for live GitHub stats and shared categories.
- When should I choose pydantic-ai-shields over circle-guard-bench?
- Choose pydantic-ai-shields over circle-guard-bench when License: pydantic-ai-shields is MIT, circle-guard-bench is Apache-2.0; Tags unique to pydantic-ai-shields: ai-agents, ai-guardrails, ai-safety, input-validation; When you need type-safe integrations with Pydantic and want built-in capabilities via pydantic-ai's native API.
- When should I choose circle-guard-bench over pydantic-ai-shields?
- Choose circle-guard-bench over pydantic-ai-shields when License: circle-guard-bench is Apache-2.0, pydantic-ai-shields is MIT; Tags unique to circle-guard-bench: ai, benchmarking, guardrail, large language models; Use circle-guard-bench when you need to evaluate the effectiveness of guardrails and safeguards in your LLM environment, as it offers an unparalleled set of scenarios specific to these protections.
- When should I avoid pydantic-ai-shields?
- If your project already relies on a different framework that does not integrate well with Pydantic When you require detailed content moderation functionalities beyond simple PII filtering and secret redaction
- When should I avoid circle-guard-bench?
- Avoid circle-guard-bench if your primary focus is on benchmarking the performance aspects like speed and latency of LLMs, as it specializes in evaluating protections rather than performance. Do not use this tool when you intend to conduct general purpose evaluations or comparisons between different LLM models that do not specifically involve security-related guard systems.
- Is pydantic-ai-shields or circle-guard-bench more popular on GitHub?
- pydantic-ai-shields has more GitHub stars (93 vs 75). Stars measure visibility, not whether either tool fits your constraints.
- Are pydantic-ai-shields and circle-guard-bench open source?
- Yes - both are open-source projects on GitHub (pydantic-ai-shields: MIT, circle-guard-bench: Apache-2.0).
- Where can I find alternatives to pydantic-ai-shields or circle-guard-bench?
- GraphCanon lists graph-backed alternatives at pydantic-ai-shields alternatives and circle-guard-bench alternatives (pydantic-ai-shields markdown twin, circle-guard-bench markdown twin), 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 mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, pydantic-ai-shields or circle-guard-bench?
- pydantic-ai-shields: Very active. circle-guard-bench: Slowing. 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 pydantic-ai-shields and circle-guard-bench?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: pydantic-ai-shields trust report; circle-guard-bench trust report.