Updated Jul 2026
5 Cheaper GPT-oss 120B Alternatives That Save You Up to 92%
GPT-oss 120B costs $0.15/$0.60 per million tokens. These alternatives deliver comparable quality for a fraction of the price.
Based on verified pricing from 49 models across 10 providers. Updated daily.
GPT-oss 120B vs Top Alternatives — Price Per Million Tokens
GPT-oss 120B
OpenAI · 128K context · Budget Tier
$0.15 input / $0.60 output
GPT-oss 20B
OpenAI · 128K context
$0.08 / $0.35-47% / -42%
Llama 3.1 8B
Meta (Together.ai) · 128K context
$0.10 / $0.10-33% / -83%
DeepSeek V4 Flash
DeepSeek · 1M context
$0.14 / $0.28-7% / -53%
Mistral Small 4
Mistral · 128K context
$0.10 / $0.30-33% / -50%
Gemini 2.5 Flash-Lite
Google · 1M context
$0.10 / $0.40-33% / -33%
💰 Calculate Your Savings
See how much you'd save by switching from GPT-oss 120B to the cheapest alternative
$3,180/yr
savings by switching to Llama 3.1 8B
GPT-oss 120B: $3,600/yr → Llama 3.1 8B: $420/yr
The 5 Best GPT-oss 120B Alternatives (Ranked by Value)
Input: $0.08/M
Output: $0.35/M
Context: 128K
- 47% cheaper input, 42% cheaper output than GPT-oss 120B
- Same OpenAI API — zero code changes needed
- Smaller model = faster response times
- Sufficient quality for most classification and chat tasks
Full comparison: GPT-oss 120B vs GPT-oss 20B →
Input: $0.10/M
Output: $0.10/M
Context: 128K
- 33% cheaper input, 83% cheaper output than GPT-oss 120B
- Cheapest output tokens of any capable model
- Open-source with strong community and tooling
- Ideal for high-volume classification and extraction
Full comparison: GPT-oss 120B vs Llama 3.1 8B →
Input: $0.14/M
Output: $0.28/M
Context: 1M
- 7% cheaper input, 53% cheaper output than GPT-oss 120B
- 1M token context — 8x more than GPT-oss 120B
- Fast response times for chatbot workloads
- OpenAI-compatible API for easy migration
Full comparison: GPT-oss 120B vs DeepSeek V4 Flash →
Input: $0.10/M
Output: $0.30/M
Context: 128K
- 33% cheaper input, 50% cheaper output than GPT-oss 120B
- European provider — GDPR-friendly
- Strong for classification, extraction, and chatbots
- Excellent price-performance ratio
Full comparison: GPT-oss 120B vs Mistral Small 4 →
Input: $0.10/M
Output: $0.40/M
Context: 1M
- 33% cheaper on both input and output vs GPT-oss 120B
- 1M token context for long documents
- Multimodal capabilities (text, image, video)
- Google Cloud integration and enterprise support
Full comparison: GPT-oss 120B vs Gemini 2.5 Flash-Lite →
Why Teams Are Switching Away from GPT-oss 120B
💸
Cost
GPT-oss 120B output tokens cost $0.60/M — 6x more than Llama 3.1 8B for similar quality tasks.
📏
Context Limits
GPT-oss 120B's 128K context is limiting. DeepSeek and Gemini offer 1M context at lower prices.
🔄
Smaller Sibling
GPT-oss 20B offers similar quality at 47% less cost — why pay more for the 120B version?
⚡
Speed
Smaller models like GPT-oss 20B and Llama 3.1 8B deliver faster response times.
Frequently Asked Questions
What is the cheapest GPT-oss 120B alternative?
GPT-oss 20B is the cheapest at $0.08/$0.35 per million tokens — 47% cheaper on input and 42% cheaper on output. Llama 3.1 8B at $0.10/$0.10 offers the cheapest output tokens at 92% less.
How does GPT-oss 120B compare to DeepSeek V4 Flash?
DeepSeek V4 Flash costs $0.14/$0.28 vs GPT-oss 120B's $0.15/$0.60. DeepSeek is roughly the same on input but 53% cheaper on output, with a larger 1M context window vs 128K.
Is GPT-oss 20B good enough to replace GPT-oss 120B?
For most tasks, yes. GPT-oss 20B at $0.08/$0.35 is 47% cheaper on input and 42% cheaper on output. It's the same OpenAI API, just a smaller model. For complex reasoning tasks, you may need the 120B version.
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