GPT-5.1 Medium vs Nemotron 3.5 Lightning (30B A3B): Specs & Benchmark Comparison

OpenAI logo
GPT-5.1 Medium
OpenAI
NVIDIA logo
Nemotron 3.5 Lightning (30B A3B)
NVIDIA
CharacteristicGPT-5.1 MediumNemotron 3.5 Lightning (30B A3B)
CompanyOpenAINVIDIA
Release DateNovember 11, 2025August 11, 2026
Parameters—30B
MultimodalYesNo
Context (input)256K262K
Context (output)64K262K
Input Price / 1M$1.00$0.05
Output Price / 1M$4.00$0.20
Average Score1.00.8

Verdict

Nemotron 3.5 Lightning (30B A3B) leads in 3 out of 4 comparison categories.

Overall Performance

Both models show comparable average scores: GPT-5.1 Medium — 1.0, Nemotron 3.5 Lightning (30B A3B) — 0.8.

API Cost

Nemotron 3.5 Lightning (30B A3B) is 20.0x cheaper: input $0.05/1M vs $1.00/1M tokens.

Context Window

Nemotron 3.5 Lightning (30B A3B) supports a larger context: 262K vs 256K tokens.

Recency

Nemotron 3.5 Lightning (30B A3B) is newer: released 8/11/2026 vs 11/11/2025.

More About These Models

OpenAI logo
GPT-5.1 Medium
OpenAI — specs, benchmarks, API
NVIDIA logo
Nemotron 3.5 Lightning (30B A3B)
NVIDIA — specs, benchmarks, API

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Frequently Asked Questions

Which is better for coding — GPT-5.1 Medium or Nemotron 3.5 Lightning (30B A3B)?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — GPT-5.1 Medium or Nemotron 3.5 Lightning (30B A3B)?
Nemotron 3.5 Lightning (30B A3B) is cheaper for input: $0.05 per 1M tokens vs $1.00.
Which has a larger context window — GPT-5.1 Medium or Nemotron 3.5 Lightning (30B A3B)?
Nemotron 3.5 Lightning (30B A3B) supports a larger context: 262,100 tokens vs 256,000.

The GPT-5.1 Medium and Nemotron 3.5 Lightning (30B A3B) comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5.1 Medium or Nemotron 3.5 Lightning (30B A3B) page. See also the complete list of AI model comparisons.