gpt-oss-20b is $0.97 cheaper per 1M input tokens (97% lower; 33.3x difference).
API cost decision in 10 seconds
gpt-oss-20b vs NewGrok Build 0.1
Pick gpt-oss-20b for lower cost; pick Grok Build 0.1 only if the larger context window matters more.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick gpt-oss-20b for lower cost; pick Grok Build 0.1 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, gpt-oss-20b is estimated at $0.1 vs $2 for Grok Build 0.1, saving $1.9 (95% lower).
Cost-first pickgpt-oss-20b
Context-first pickGrok Build 0.1
Sample savings$1.995%
10x traffic gap$19
Grok Build 0.1 has more context, but gpt-oss-20b saves $1.9 on the standard workload. At 10x that traffic, the same price gap is about $19. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
gpt-oss-20b stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | gpt-oss-20b | Grok Build 0.1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | gpt-oss-20b | $0.22 | $6 |
| Balanced workload | 1M input + 1M output | gpt-oss-20b | $0.17 | $3 |
| Output-heavy chatbot | 1M input + 5M output | gpt-oss-20b | $0.73 | $11 |
gpt-oss-20b is $1.86 cheaper per 1M output tokens (93% lower; 14.3x difference).
Grok Build 0.1 has 124.93K more context (1.95x larger).
gpt-oss-20b is $1.9 cheaper on the standard workload (95% 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; gpt-oss-20b has the lower output price; Grok Build 0.1 offers the larger 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 $2 for Grok Build 0.1.
Choose gpt-oss-20b when you care most about lower input-token price, and lower output-token price.
Choose Grok Build 0.1 when you care most about larger context window.
- On the standard 1M input plus 500K output workload, gpt-oss-20b is estimated at $0.1 vs $2 for Grok Build 0.1, saving $1.9 (95% lower).
- gpt-oss-20b is $1.9 cheaper on the standard workload (95% lower).
- gpt-oss-20b is $0.97 cheaper per 1M input tokens (97% lower; 33.3x difference).
- gpt-oss-20b is $1.86 cheaper per 1M output tokens (93% lower; 14.3x difference).
- Grok Build 0.1 has 124.93K more context (1.95x larger).
| Feature | gpt-oss-20b (OpenAI) | NewGrok Build 0.1 (xAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.03 | $1 |
| Completion Price per 1M tokens | $0.14 | $2 |
| Sample Workload Cost 1M input + 500K output | $0.1 | $2 |
| Context Window | 131.07K | 256K |
| Release Date | ||
| Popularity | #67 | #119 |
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 $2 for Grok Build 0.1, saving $1.9 (95% 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 | gpt-oss-20b | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Grok Build 0.1 | 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.
- Llama 4 Scout offers 10M context with $0.23 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- Owl Alpha offers 1.05M context with $0 sample workload cost.
- DeepSeek V4 Flash offers 1.05M context with $0.2 sample workload cost.
- DeepSeek V4 Flash · DeepSeek · #1
- Hy3 preview · Tencent · #2
- Claude Opus 4.7 · Anthropic · #3
- Claude Sonnet 4.6 · Anthropic · #4
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Open xAI 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...
Grok Build 0.1 is xAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...