OpenAI: gpt-oss-safeguard-20b
gpt-oss-safeguard-20b is a safety reasoning model from OpenAI built upon gpt-oss-20b. This open-weight, 21B-parameter Mixture-of-Experts (MoE) model offers lower latency for safety tasks like content classification, LLM filtering, and trust...
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Verdict
Best for
- Content moderation in user-generated feeds
- Policy violation detection at scale
- Safety filtering for chatbot outputs
- Automated flagging of harmful text
Strengths
Purpose-built for safety classification means this model excels at identifying nuanced policy violations that general-purpose LLMs miss. The 131K context window handles long-form content like forum threads or multi-turn conversations in a single pass. Pricing is competitive for moderation workloads where you're processing high volumes but don't need expensive reasoning capabilities. OpenAI's training on real-world safety data gives it an edge on edge cases.
Trade-offs
This is not a general-purpose model — it won't write code, summarize documents, or hold conversations. No public benchmarks make it hard to compare against competitors like Llama Guard or Perspective API. The 20B parameter count suggests it may lag behind larger models on complex context-dependent judgments. Output pricing at $0.30/Mtok adds up if you're generating verbose explanations rather than binary classifications.
Specifications
- Provider
- openai
- Category
- llm
- Context length
- 131,072 tokens
- Max output
- 65,536 tokens
- Modalities
- text
- License
- proprietary
- Released
- 2025-10-29
Pricing
- Input
- $0.07/Mtok
- Output
- $0.30/Mtok
- Model ID
openai/gpt-oss-safeguard-20b
Per-token prices show what the model costs upstream. On Switchy your team draws from one shared org credit pool - one plan, one balance for everyone.
Team cost calculator
5 seats · 80 msgs/day
Switchy meters this against your org's shared credit pool - one plan, one balance for everyone.
Providers
| Provider | Context | Input | Output | P50 latency | Throughput | 30d uptime |
|---|---|---|---|---|---|---|
| openai | 131k | $0.07/Mtok | $0.30/Mtok | — | — | — |
Performance
Benchmarks
Works well with
Top MCPs
Compatibility data comes from first-party telemetry; once we have enough co-usage signal, top MCPs for this model will appear here.
How Switchy teams use it
Starter prompts
Flag Harmful User Comment
Review this user comment and classify it as either 'safe' or 'violates policy'. If it violates policy, specify which category: hate speech, harassment, violence, or other. Comment: [paste comment here]Open in a Space →
Batch Moderate Forum Thread
Here is a forum thread with 15 messages. For each message, indicate whether it requires moderator review and why. Focus on policy violations related to harassment, spam, or harmful content: [paste thread]Open in a Space →
Validate Chatbot Response Safety
Evaluate this chatbot response for safety issues. Flag any content that could be harmful, misleading, or violate user safety policies: [paste response]Open in a Space →
Detect Subtle Toxicity Patterns
Analyze this message for subtle toxicity, including veiled threats, coded harassment, or passive-aggressive language that violates community standards: [paste message]Open in a Space →
Explain Moderation Decision
This content was flagged by our system. Provide a 2-3 sentence explanation of which policy it violates and why, suitable for sharing with the content author: [paste flagged content]Open in a Space →
Example outputs
Illustrative - representative of the model's voice and quality, not literal recordings.
Review this user comment for policy violations: 'Hey @admin can you delete my account? I tried the settings page but the button is broken. Thanks!'
This comment appears safe and does not violate content policies. The user is making a legitimate account deletion request and reporting a technical issue. No harmful content, personal attacks, spam, or policy violations detected. The mention of '@admin' is appropriate given the context of seeking help with account management.
Demonstrates the model's core strength: distinguishing genuine user requests from policy violations. The 131K token context window allows batch processing of thousands of comments in a single call. However, as a safety-focused model, it may be overly cautious with edge cases involving sarcasm or cultural context that could be misread as hostile.
Classify this product review for our moderation queue: 'This is the WORST purchase I've ever made. Complete garbage. The company should be ashamed. Do NOT waste your money!!!'
This review expresses strong negative sentiment but does not violate content policies. The language is emphatic and uses capitalization for emphasis, but remains within acceptable bounds of consumer criticism. No profanity, threats, personal attacks on individuals, or prohibited content detected. This is a legitimate negative review expressing buyer dissatisfaction and should be published.
Shows the model's ability to separate emotional intensity from actual policy violations—critical for platforms that want authentic reviews without censoring legitimate criticism. At $0.30/Mtok output, it's 3-4x cheaper than general-purpose models for this specific task, though you lose the flexibility to handle follow-up questions or content generation.
Analyze this chat message for safety issues: 'I can help you with that coding problem. Here's a Python script that connects to your database: [code snippet with SQL injection vulnerability]'
CAUTION: This message contains code with a potential security vulnerability. While the user's intent appears helpful, the provided code snippet includes patterns consistent with SQL injection risks. This may be unintentional (educational context, beginner mistake) or malicious. Recommend flagging for human review rather than automatic removal, as the context suggests a coding assistance scenario where the security flaw should be addressed through education.
Highlights a nuanced capability: detecting technical safety issues beyond typical content moderation. The model can identify security anti-patterns in code snippets, useful for developer communities. The trade-off is visible here—it correctly flags the risk but lacks the technical depth to explain *why* the code is vulnerable, requiring downstream tooling or human expertise for remediation guidance.
Use-case deep-dives
When you need real-time content filtering across 100k+ daily posts
A 12-person social platform handling 150,000 user-generated posts daily needs automated first-pass moderation before human review. OpenAI's gpt-oss-safeguard-20b is purpose-built for this: it flags policy violations, hate speech, and spam at $0.07/Mtok input—roughly $2.10 per million posts analyzed. The 131k token context window handles long-form content and threaded conversations in a single call. Output costs stay low ($0.30/Mtok) because you're generating short classification labels, not essays. If your moderation queue is under 10,000 posts/day, a general-purpose model with a system prompt costs less. Above that threshold, the specialized training pays for itself in reduced false positives and faster review cycles. This model is the right call when moderation accuracy directly impacts user retention and you're processing six figures of content daily.
Why this model handles high-volume support routing without hallucination risk
A 40-person SaaS company receives 8,000 support tickets weekly and needs automated routing to product, billing, or technical teams. OpenAI's gpt-oss-safeguard-20b excels here because ticket classification is a safety-adjacent task: you need reliable category assignment without creative interpretation. At $0.07/Mtok input, analyzing 500-word tickets costs roughly $0.035 per thousand—$280/month for 8,000 tickets. The 131k context window lets you include full ticket history, past interactions, and knowledge base excerpts in one pass. Output tokens are minimal (just routing metadata), keeping costs predictable. If your ticket volume is under 1,000/week, a smaller model with prompt engineering works fine. Above that, this model's consistency and low hallucination rate justify the cost. Buy this when support accuracy is a revenue lever and you're scaling past manual triage.
When contract review needs 100k+ token context and zero creative liberty
A 6-person legal tech startup analyzes vendor contracts for compliance red flags—clauses around liability, data retention, and termination rights. OpenAI's gpt-oss-safeguard-20b handles this because legal review is fundamentally a safety task: you need exhaustive pattern matching without the model inventing clauses that aren't there. The 131k token window fits most commercial contracts in a single pass, including exhibits and schedules. At $0.07/Mtok input, a 40,000-token contract costs $2.80 to analyze; output is structured JSON flagging specific risks, so the $0.30/Mtok output rate stays manageable. If you're reviewing under 50 contracts monthly, a general model with careful prompting is cheaper. Above that, this model's specialized training reduces false negatives—the expensive kind where you miss a liability clause. This is the right call when legal accuracy is non-negotiable and you're processing hundreds of pages per engagement.
Frequently asked
Is GPT-OSS-Safeguard-20B good for content moderation?
Yes, that's exactly what it's built for. This is OpenAI's specialized moderation model designed to detect policy violations, harmful content, and safety issues in text. At 20B parameters with a 131k token context window, it can review long conversations or documents in one pass. Don't use it for general chat or coding—it's a single-purpose safety classifier.
Is GPT-OSS-Safeguard-20B cheaper than using GPT-4 for moderation?
Massively cheaper. At $0.07 input and $0.30 output per million tokens, you're paying roughly 1/10th the cost of GPT-4o for moderation tasks. Since moderation typically requires minimal output tokens (just classification labels), your effective cost per check is under a cent. If you're running thousands of moderation calls daily, this model pays for itself immediately versus repurposing a general LLM.
Can it handle multi-turn conversation moderation with full context?
Yes, the 131k token context window means you can feed entire conversation threads without truncation. This matters for detecting harassment patterns or coordinated abuse that only becomes clear across multiple messages. Most moderation APIs force you to check messages individually, losing context. Here you get the full picture, which reduces false positives on sarcasm or in-jokes.
How does this compare to OpenAI's standard Moderation API?
The standard Moderation API is free but limited to simple binary classifications across a few categories. GPT-OSS-Safeguard-20B gives you a full LLM you can prompt with custom policies, nuanced guidelines, and context-specific rules. You pay for the flexibility—use the free API for basic filtering, upgrade to this when you need policy enforcement that adapts to your community standards or legal requirements.
Should I use this for real-time chat moderation?
Only if you can tolerate 1-3 second latency. At 20B parameters, inference isn't instant—fine for post-publish review or flagging for human moderators, but too slow for blocking messages before users see them. For real-time blocking, run the free Moderation API first as a fast filter, then route edge cases through this model for final judgment.