GPT-5.4 nano vs Llama 4 Behemoth

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Benchmark data for one or both models is coming soon. This page currently shows metadata and pricing where BenchLM has it, and score-level comparisons will populate as public benchmark results land.

BenchLM does not have sourced benchmark coverage for GPT-5.4 nano yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.

GPT-5.4 nano has the larger context window at 400K, compared with 32K for Llama 4 Behemoth.

Quick Verdict

Benchmark data for GPT-5.4 nano and Llama 4 Behemoth is coming soon on BenchLM.

Agentic

Coming soon

Benchmark data for this category is coming soon.

Coding

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
HumanEval
40%

Multimodal & Grounded

Coming soon

Benchmark data for this category is coming soon.

Reasoning

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
SimpleQA
46%
Coming soon
MuSR
44%

Knowledge

GPT-5.4 nano

GPT-5.4 nano

82.8

Llama 4 Behemoth

46

82.8%
GPQA
47%
Coming soon
MMLU
48%
Coming soon
SuperGPQA
45%
Coming soon
OpenBookQA
43%

Instruction Following

Coming soon

Benchmark data for this category is coming soon.

Multilingual

Coming soon

Benchmark data for this category is coming soon.

Mathematics

Coming soon

Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.

Coming soon
AIME 2023
48%
Coming soon
AIME 2024
50%
Coming soon
AIME 2025
49%
Coming soon
HMMT Feb 2023
44%
Coming soon
HMMT Feb 2024
46%
Coming soon
HMMT Feb 2025
45%
Coming soon
BRUMO 2025
47%

Frequently Asked Questions

Can I compare GPT-5.4 nano and Llama 4 Behemoth on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for GPT-5.4 nano and Llama 4 Behemoth today?

GPT-5.4 nano: $0.20 input / $1.25 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

Last updated: March 17, 2026

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