Model comparison
GPT-5.4 nano vs Granite 4.2 8B
GPT-5.4 nano is the stronger model overall, scoring 41.9 to 40.5 on the Noometry Index. Granite 4.2 8B costs 4.3× less per token, which makes it the better buy when GPT-5.4 nano's lead doesn't matter for your workload.
Last verified . 11 shared benchmarks.
Summary
- They share 11 benchmarks with published results for both. GPT-5.4 nano scores higher in 6 categories and Granite 4.2 8B in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.4 nano leads 55.7 to 49.6.
- Granite 4.2 8B is cheaper at $0.06 / $0.25 per million input/output tokens, against $0.20 / $1.25 for GPT-5.4 nano.
- GPT-5.4 nano accepts more context: 400K tokens versus 131K.
- Granite 4.2 8B has downloadable open weights; the other is API-only.
Side by side
| GPT-5.4 nano | Granite 4.2 8B | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 41.9 | 40.5 |
| Released | 2026-03-17 | — |
| Weights | Proprietary | Open |
| Context window | 400K | 131K |
| Max output | 128K | 118K |
| Input $ / M tokens | $0.20 | $0.06 |
| Output $ / M tokens | $1.25 | $0.25 |
| Results tracked | 40 | 11 |
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Category by category
Coding GPT-5.4 nano leads
GPT-5.4 nano: 43.6 (#84), Granite 4.2 8B: 40.5 (#137)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Coding | 1405 | 1380 |
| SciCode | 46.9% | — |
| WeirdML | 49.2% | — |
| ALE-Bench | 1,005 | — |
Reasoning Granite 4.2 8B leads
GPT-5.4 nano: 23.7 (#173), Granite 4.2 8B: 26.6 (#131)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Hard Prompts | 1381 | 1329 |
| ARC-AGI-2 | 5.7% | — |
| Kagi LLM Benchmark | 39.7% | — |
| ARC-AGI-1 | 51.5% | — |
| CritPt | 9.3% | — |
| Chess Puzzles | 30% | — |
| Mystery Game Puzzles | 9% | — |
| DTBench | 80.3% | — |
| LMCA | 36.9% | — |
| Epoch Capabilities Index | 145.81 | — |
| ForecastBench | 57.3 | — |
Math Not comparable
GPT-5.4 nano: 40.9 (#88), Granite 4.2 8B: —
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 44.9% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 87.8% | — |
| ProofBench | 5% | — |
| LMArena Math | 1406 | — |
| FrontierMath (Feb 2025 set) | 25.9% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |
Knowledge GPT-5.4 nano leads
GPT-5.4 nano: 41.9 (#103), Granite 4.2 8B: 38.4 (#145)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Expert | 1396 | 1384 |
| GPQA Diamond | 78.5% | — |
| SimpleQA Verified | 11.7% | — |
| Vectara Hallucination Rate | 3.1% | — |
Multimodal Not comparable
GPT-5.4 nano: 36.7 (#78), Granite 4.2 8B: —
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Vision | 1196 | — |
Multilingual GPT-5.4 nano leads
GPT-5.4 nano: 48.6 (#140), Granite 4.2 8B: 44.5 (#178)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Non-English | 1359 | 1302 |
| LMArena Chinese | 1392 | 1366 |
| LMArena Russian | 1363 | 1285 |
| LMArena French | 1396 | — |
| LMArena German | 1367 | — |
| LMArena Japanese | 1343 | — |
| LMArena Korean | 1320 | — |
| LMArena Spanish | 1371 | — |
Instruction Following GPT-5.4 nano leads
GPT-5.4 nano: 71.9 (#144), Granite 4.2 8B: 68.7 (#184)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Instruction Following | 1362 | 1301 |
Long Context GPT-5.4 nano leads
GPT-5.4 nano: 41.6 (#137), Granite 4.2 8B: 40.3 (#159)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Longer Query | 1366 | 1324 |
Writing & Preference GPT-5.4 nano leads
GPT-5.4 nano: 55.7 (#142), Granite 4.2 8B: 49.6 (#189)
| Benchmark | GPT-5.4 nano | Granite 4.2 8B |
|---|---|---|
| LMArena Text | 1372 | 1320 |
| LMArena Creative Writing | 1314 | 1236 |
| LMArena Multi-Turn | 1382 | 1301 |
Frequently asked questions
Is GPT-5.4 nano better than Granite 4.2 8B?
GPT-5.4 nano is the stronger model overall, scoring 41.9 to 40.5 on the Noometry Index. Granite 4.2 8B costs 4.3× less per token, which makes it the better buy when GPT-5.4 nano's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 nano or Granite 4.2 8B?
Granite 4.2 8B is cheaper. It lists at $0.06 per million input tokens and $0.25 per million output tokens; GPT-5.4 nano lists at $0.20 and $1.25.
Is GPT-5.4 nano or Granite 4.2 8B better for coding?
GPT-5.4 nano scores higher on coding benchmarks: 43.6 versus 40.5 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 nano does, with 400K tokens against 131K.
How many benchmarks do GPT-5.4 nano and Granite 4.2 8B share?
11 benchmarks have published results for both models. GPT-5.4 nano has 40 scored results on Noometry and Granite 4.2 8B has 11.