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Grok Build 0.1 vs GPT OSS 20B

At a glance

xAI's agentic build model for autonomous software engineering.

256K ctx$1.00/$2.00 per M

OpenAI's compact open-weights model for efficient inference.

131K ctx$0.03/$0.13 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-06-15
Coding
Real-World Coding70.8%
Agentic
Terminal Tasks—
Reasoning
CodingInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Cheaper96%
Coding
Real-World Coding—
Agentic
Terminal Tasks3.4%
Specs
256K
Context
16K
Max output
May 2026
Released
131K
Context
66K
Max output
Aug 2025
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.00/M tokens
Output$2.00/M tokens
Cache read$0.20/M tokens
Web search$0.005/search
Live pricing, shown before you run
Input97%$0.03/M tokens
Output94%$0.13/M tokens
Cache read85%$0.03/M tokens
Chat with Grok Build 0.1Go to model
Chat with GPT OSS 20BGo to model
Frequently Asked Questions: Grok Build 0.1 vs GPT OSS 20B▼

Which is better, Grok Build 0.1 or GPT OSS 20B?

▼

Both Grok Build 0.1 and GPT OSS 20B are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Grok Build 0.1 or GPT OSS 20B?

▼

GPT OSS 20B has a lower blended cost. Grok Build 0.1: $1.00 input / $2.00 output. GPT OSS 20B: $0.03 input / $0.13 output.

Which has a larger context window, Grok Build 0.1 or GPT OSS 20B?

▼

Grok Build 0.1 has a larger context window: Grok Build 0.1 supports 256K tokens vs GPT OSS 20B at 131K tokens.

Do both Grok Build 0.1 and GPT OSS 20B support vision?

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Grok Build 0.1 supports vision/image input, but GPT OSS 20B does not.

What are the key differences between Grok Build 0.1 and GPT OSS 20B?

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Key differences: GPT OSS 20B is significantly cheaper; only Grok Build 0.1 supports vision input. Compare full specs on this page.

Which model should I choose for my use case?

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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Grok Build 0.1 and GPT OSS 20B for free on idapt.app to see which performs better for your specific needs.

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