gpt-oss-120b vs Grok Build 0.1
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for gpt-oss-120b and Grok Build 0.1.
gpt-oss-120b
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized...
Grok Build 0.1
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...
Technical Specifications
| Specification | gpt-oss-120b | Grok Build 0.1 |
|---|---|---|
| Provider | OpenAI | xAI |
| Context Window | 131,072 tokens | 256,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | stable | stable |
| API Available | Yes | Yes |
| Released Date | 2025-08-05 | 2026-05-20 |
API Pricing Comparison
Input Price per Million Tokens
gpt-oss-120b
$0.03
Grok Build 0.1
$1.00
Output Price per Million Tokens
gpt-oss-120b
$0.15
Grok Build 0.1
$2.00
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
gpt-oss-120b Quirks & Gotchas
No developer gotchas reported.
Grok Build 0.1 Quirks & Gotchas
No developer gotchas reported.