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GPT-4.1 nano vs GPT-OSS-120B
Comprehensive side-by-side LLM comparison
GPT-OSS-120B leads with 12.3% higher average benchmark score. GPT-4.1 nano offers 948.2K more tokens in context window than GPT-OSS-120B. GPT-4.1 nano is $Infinity cheaper per million tokens. GPT-4.1 nano supports multimodal inputs. Overall, GPT-OSS-120B is the stronger choice for coding tasks.
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OpenAI
GPT-4.1 nano is OpenAI's smallest member of the GPT-4.1 family, released in April 2025 alongside GPT-4.1 and GPT-4.1 mini as the latency-optimized, cost-minimized option for high-throughput applications. Positioned below GPT-4.1 mini in both size and cost, it was designed for use cases where speed and affordability dominate over raw capability — including tool calling, intent classification, short-form instruction following, and retrieval-augmented lookup tasks. Unlike its larger siblings, it supports fine-tuning, making it a practical candidate for task-specific customization at scale without incurring the cost of fine-tuning larger models.
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OpenAI
GPT-OSS-120B, released by OpenAI in August 2025, is an open-weight large language model with 120 billion parameters distributed under the Apache 2.0 license. It represents OpenAI's entry into the open-source model space, enabling developers to self-host and fine-tune a GPT-5-generation-class model. GPT-OSS-120B targets research applications, on-premises deployments, and custom fine-tuning workflows requiring a large open-weight base model.
3 months newer
GPT-4.1 nano
OpenAI
2025-04-14
GPT-OSS-120B
OpenAI
2025-08
Pricing Comparison
Cost per million tokens (USD)
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GPT-4.1 nano
Input:$0.10
Output:$0.40($Infinity cheaper)
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GPT-OSS-120B
Input:$Infinity
Output:$Infinity
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-4.1 nano
Average Score:66.0%
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GPT-OSS-120B
Average Score:78.3%(+12.3%)
Performance comparison across key benchmark categories
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GPT-4.1 nano
Science66.0%
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GPT-OSS-120B
Science78.3%(+12.3%)
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Knowledge Cutoff
Training data recency comparison
GPT-4.1 nano
2024-06
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-4.1 nano
1 providers
OpenAI
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GPT-OSS-120B
1 providers
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GPT-4.1 nano
Avg Score:66.0%
Providers:1
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GPT-OSS-120B
Avg Score:78.3%(+12.3%)
Providers:1