gpt-oss-20b is $0.01 cheaper per 1M input tokens (25% lower; 1.33x difference).
API cost decision in 10 seconds
gpt-oss-20b vs Gemma 3 12B
Pick gpt-oss-20b when budget is the priority.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick gpt-oss-20b when budget is the priority.
On the standard 1M input plus 500K output workload, gpt-oss-20b is estimated at $0.1 vs $0.11 for Gemma 3 12B, saving $0.005 (4.8% lower).
Cost-first pickgpt-oss-20b
Context-first pickBoth models
Sample savings$0.0054.8%
10x traffic gap$0.05
The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $0.05. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors gpt-oss-20b, balanced workload favors Tie, and output-heavy chatbot favors Gemma 3 12B.
| Workload shape | Token mix | Better pick | gpt-oss-20b | Gemma 3 12B |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | gpt-oss-20b | $0.22 | $0.27 |
| Balanced workload | 1M input + 1M output | Tie | $0.17 | $0.17 |
| Output-heavy chatbot | 1M input + 5M output | Gemma 3 12B | $0.73 | $0.69 |
Gemma 3 12B is $0.01 cheaper per 1M output tokens (7.1% lower; 1.08x difference).
Both models report the same context window at 131.07K tokens.
gpt-oss-20b is $0.005 cheaper on the standard workload (4.8% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
gpt-oss-20b has the lower input price; Gemma 3 12B has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, gpt-oss-20b is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.1 for gpt-oss-20b and $0.11 for Gemma 3 12B.
Choose gpt-oss-20b when you care most about lower input-token price.
Choose Gemma 3 12B when you care most about lower output-token price.
- On the standard 1M input plus 500K output workload, gpt-oss-20b is estimated at $0.1 vs $0.11 for Gemma 3 12B, saving $0.005 (4.8% lower).
- gpt-oss-20b is $0.005 cheaper on the standard workload (4.8% lower).
- gpt-oss-20b is $0.01 cheaper per 1M input tokens (25% lower; 1.33x difference).
- Gemma 3 12B is $0.01 cheaper per 1M output tokens (7.1% lower; 1.08x difference).
- Both models report the same context window at 131.07K tokens.
| Feature | gpt-oss-20b (OpenAI) | Gemma 3 12B (Google) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.03 | $0.04 |
| Completion Price per 1M tokens | $0.14 | $0.13 |
| Sample Workload Cost 1M input + 500K output | $0.1 | $0.11 |
| Context Window | 131.07K | 131.07K |
| Release Date | ||
| Popularity | #67 | #123 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | gpt-oss-20b | On the standard 1M input plus 500K output workload, gpt-oss-20b is estimated at $0.1 vs $0.11 for Gemma 3 12B, saving $0.005 (4.8% lower). |
| High-volume input processing | gpt-oss-20b | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Gemma 3 12B | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Tie | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- gpt-oss-120b (free) can replace gpt-oss-20b when lower sample workload cost matters most: $0.
- gpt-oss-20b (free) can replace gpt-oss-20b when lower sample workload cost matters most: $0.
- Gemma 4 31B (free) can replace Gemma 3 12B when lower sample workload cost matters most: $0.
- Gemma 4 26B A4B (free) can replace Gemma 3 12B when lower sample workload cost matters most: $0.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash (free) offers 1.05M context with $0 sample workload cost.
- Lyria 3 Clip Preview offers 1.05M context with $0 sample workload cost.
- Lyria 3 Pro Preview offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
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Open Google modelsgpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Gemma 3 introduces multimodality, supporting vision-language input and text outputs. It handles context windows up to 128k tokens, understands over 140 languages, and offers improved math, reasoning, and chat capabilities,...