GPT-5 vs Llama Guard 3 1B
GPT-5 (2025) and Llama Guard 3 1B (2024) are compact production models from OpenAI and AI at Meta. GPT-5 ships a 128K-token context window, while Llama Guard 3 1B ships a not-yet-sourced context window. On pricing, Llama Guard 3 1B costs $0.1/1M input tokens versus $1.25/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Llama Guard 3 1B is ~1150% cheaper at $0.1/1M; pay for GPT-5 only for coding workflow support.
Specs
| Released | 2025-01-21 | 2024-09-25 |
| Context window | 128K | — |
| Parameters | — | 1B |
| Architecture | decoder only | decoder only |
| License | Proprietary | Open Source |
| Knowledge cutoff | - | - |
Pricing and availability
| GPT-5 | Llama Guard 3 1B | |
|---|---|---|
| Input price | $1.25/1M tokens | $0.1/1M tokens |
| Output price | $10/1M tokens | $0.1/1M tokens |
| Providers |
Capabilities
| GPT-5 | Llama Guard 3 1B | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: GPT-5, multimodal input: GPT-5, function calling: GPT-5, tool use: GPT-5, structured outputs: GPT-5, and code execution: GPT-5. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, GPT-5 lists $1.25/1M input and $10/1M output tokens, while Llama Guard 3 1B lists $0.1/1M input and $0.1/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama Guard 3 1B lower by about $3.77 per million blended tokens. Availability is 2 providers versus 1, so concentration risk also matters.
Choose GPT-5 when coding workflow support and broader provider choice are central to the workload. Choose Llama Guard 3 1B when provider fit and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Which is cheaper, GPT-5 or Llama Guard 3 1B?
Llama Guard 3 1B is cheaper on tracked token pricing. GPT-5 costs $1.25/1M input and $10/1M output tokens. Llama Guard 3 1B costs $0.1/1M input and $0.1/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is GPT-5 or Llama Guard 3 1B open source?
GPT-5 is listed under Proprietary. Llama Guard 3 1B is listed under Open Source. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, GPT-5 or Llama Guard 3 1B?
GPT-5 has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, GPT-5 or Llama Guard 3 1B?
GPT-5 has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for function calling, GPT-5 or Llama Guard 3 1B?
GPT-5 has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run GPT-5 and Llama Guard 3 1B?
GPT-5 is available on Replicate API and OpenRouter. Llama Guard 3 1B is available on Fireworks AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Continue comparing
Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.