GPT-5.4 nano vs K-Exaone

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

GPT-5.4 nano and K-Exaone finish on the same overall score, so this is less about a single winner and more about where the edge shows up. The headline says tie; the benchmark table is where the real choice happens.

GPT-5.4 nano gives you the larger context window at 400K, compared with 256K for K-Exaone.

Quick Verdict

Treat this as a split decision. GPT-5.4 nano makes more sense if coding is the priority or you need the larger 400K context window; K-Exaone is the better fit if its strengths line up with your actual workload.

Agentic

Coming soon

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

46.3%
Terminal-Bench 2.0
Coming soon
39%
OSWorld-Verified
Coming soon
56.1%
MCP Atlas
Coming soon
35.5%
Toolathlon
Coming soon
92.5%
tau2-bench
Coming soon

Coding

GPT-5.4 nano

GPT-5.4 nano

52.4

K-Exaone

49.4

52.4%
SWE-bench Pro
Coming soon
Coming soon
SWE-bench Verified
49.4%

Multimodal & Grounded

Coming soon

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

66.1%
MMMU-Pro
Coming soon
69.5%
MMMU-Pro w/ Python
Coming soon
0.2419
OmniDocBench 1.5
Coming soon

Reasoning

Coming soon

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

38.7%
MRCRv2
Coming soon
44.2%
MRCR v2 64K-128K
Coming soon
33.1%
MRCR v2 128K-256K
Coming soon
73.4%
Graphwalks BFS 128K
Coming soon
50.8%
Graphwalks Parents 128K
Coming soon

Knowledge

Coming soon

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

82.8%
GPQA
Coming soon
37.7%
HLE
Coming soon
24.3%
HLE w/o tools
Coming soon

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

Benchmark data for this category is coming soon.

Frequently Asked Questions

Which is better, GPT-5.4 nano or K-Exaone?

GPT-5.4 nano and K-Exaone are tied on overall score, so the right pick depends on which category matters most for your use case.

Which is better for coding, GPT-5.4 nano or K-Exaone?

GPT-5.4 nano has the edge for coding in this comparison, averaging 52.4 versus 49.4. K-Exaone stays close enough that the answer can still flip depending on your workload.

Last updated: March 18, 2026

Weekly LLM Benchmark Digest

Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.

Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.