LLM Reference

GPT-2 Medium vs Llama 3.1 NemoGuard 8B Topic Control

GPT-2 Medium (2019) and Llama 3.1 NemoGuard 8B Topic Control (2025) are compact production models from OpenAI and NVIDIA AI. GPT-2 Medium ships a 1k-token context window, while Llama 3.1 NemoGuard 8B Topic Control ships a 4k-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

Llama 3.1 NemoGuard 8B Topic Control fits 4x more tokens; pick it for long-context work and GPT-2 Medium for tighter calls.

Decision scorecard

Local evidence first
SignalGPT-2 MediumLlama 3.1 NemoGuard 8B Topic Control
Best forgeneral production evaluationgeneral production evaluation
Decision fitGeneralClassification
Context window1k4k
Cheapest output--
Provider routes0 tracked1 tracked
Shared benchmarks0 shared0 shared

Decision tradeoffs

Choose GPT-2 Medium when...
  • Use GPT-2 Medium when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
Choose Llama 3.1 NemoGuard 8B Topic Control when...
  • Llama 3.1 NemoGuard 8B Topic Control has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • Llama 3.1 NemoGuard 8B Topic Control has broader tracked provider coverage for fallback and route flexibility.
  • Local decision data tags Llama 3.1 NemoGuard 8B Topic Control for Classification.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

GPT-2 Medium

Unavailable

No complete token price in local provider data

Llama 3.1 NemoGuard 8B Topic Control

Unavailable

No complete token price in local provider data

Cost delta unavailable until both models have sourced input and output token prices.

Switch friction

GPT-2 Medium -> Llama 3.1 NemoGuard 8B Topic Control
  • No overlapping tracked provider route is sourced for GPT-2 Medium and Llama 3.1 NemoGuard 8B Topic Control; plan for SDK, billing, or endpoint changes.
Llama 3.1 NemoGuard 8B Topic Control -> GPT-2 Medium
  • No overlapping tracked provider route is sourced for Llama 3.1 NemoGuard 8B Topic Control and GPT-2 Medium; plan for SDK, billing, or endpoint changes.

Specs

Specification
Released2019-02-142025-01-01
Context window1k4k
Parameters355M8B
ArchitectureDecoder OnlyDecoder Only
LicenseMITOSI-approvedOpen Weights
OpennessOpen sourceOpen weights
WeightsUnknownUnknown
CodeUnknownUnknown
Commercial useCommercial use: permitted-
Knowledge cutoff2017-12-

Pricing and availability

Pricing attributeGPT-2 MediumLlama 3.1 NemoGuard 8B Topic Control
Input price--
Output price--
Providers-

Pricing not yet sourced for either model.

Capabilities

CapabilityGPT-2 MediumLlama 3.1 NemoGuard 8B Topic Control
VisionNoNo
MultimodalNoNo
ReasoningNoNo
JSON / Tool useNoNo
Structured outputsNoNo
Code executionNoNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

No shared benchmark scores are currently available for this pair.

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Last reviewed: 2026-05-19. Data sourced from public model cards and provider documentation.