GPT-oss 120B vs Llama 3.1 8B

Side-by-side API pricing comparison: which model gives you more for less?

Last verified May 2026 · Prices per 1M tokens

Cheaper Input
Llama 3.1 8B
$0.1 vs $0.15
Cheaper Output
Llama 3.1 8B
$0.1 vs $0.6
Max Savings
83%
by switching to Llama 3.1 8B
Save up to 83%
Switch from GPT-oss 120B to Llama 3.1 8B · $0.1 input / $0.1 output per 1M tokens

Quick Comparison

FeatureGPT-oss 120BLlama 3.1 8B
Provider OpenAI Meta (Together.ai)
Tier Budget Budget
Input Price $0.15 $0.1
Output Price $0.6 $0.1
Context Window 128K 128K
Verified May 2026 May 2026

When to Use Each

💰 Cost-Sensitive Workloads

High-volume APIs, batch processing, and startups watching runway.

→ Use Llama 3.1 8B — 33% cheaper input, 83% cheaper output

🧠 Complex Reasoning

Tasks requiring advanced reasoning, code generation, or nuanced analysis.

→ Either model works — compare quality on your specific tasks

⚡ High-Throughput APIs

Real-time chatbots, streaming responses, and latency-sensitive apps.

→ Llama 3.1 8B for cost at scale, GPT-oss 120B if quality matters more

🔬 Prototyping & Testing

Development, experimentation, and non-critical workloads.

→ Use Llama 3.1 8B — same context (128K), much cheaper

Track price changes for both models

APIpulse Pro monitors 49 models across 10 providers. Get alerts when GPT-oss 120B or Llama 3.1 8B prices change.

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Frequently Asked Questions

Is Llama 3.1 8B cheaper than GPT-oss 120B?

Yes. Llama 3.1 8B costs $0.1 input / $0.1 output per 1M tokens, while GPT-oss 120B costs $0.15 input / $0.6 output. That's 33% cheaper on input and 83% cheaper on output.

How much can I save switching to Llama 3.1 8B?

For a typical workload (1M input + 500K output tokens/month), Llama 3.1 8B costs $0.15/month vs $0.45/month for GPT-oss 120B. That's a savings of $0.30/month (83%).

Which should I choose: GPT-oss 120B or Llama 3.1 8B?

Choose Llama 3.1 8B for cost efficiency. Choose GPT-oss 120B for OpenAI ecosystem benefits. Both have 128K context windows.