GPT-5.5 vs Granite 4.1 30B: Benchmarks, Pricing & Capabilities Compared
TL;DR — GPT-5.5 wins for reasoning + long-context · Granite 4.1 30B wins for general use.
GPT-5.5 OpenAI
- Released
- 2026-04-23
- Context window
- 922K tokens
- Input price
- $5.00 / Mtok
- Output price
- $30.00 / Mtok
Granite 4.1 30B IBM
- Released
- 2026-04-29
- Context window
- 131K tokens
- Input price
- $0.00 / Mtok
- Output price
- $0.00 / Mtok
Benchmark comparison
| Benchmark | GPT-5.5 | Granite 4.1 30B |
|---|---|---|
| AA Intelligence Index | 60.2 ✓ | 14.7 |
| GPQA Diamond | 93.5% ✓ | 48.1% |
| HLE | 44.3% ✓ | 4.2% |
| IF-Bench | 75.9% ✓ | 44.4% |
| LiveCodeBench Reasoning | 74.3% ✓ | 18.7% |
| SciCode | 56.1% ✓ | 25.8% |
| TAU2-bench | 93.9% ✓ | 42.1% |
| TerminalBench-Hard | 60.6% ✓ | 2.3% |
Pricing comparison
| Metric | GPT-5.5 | Granite 4.1 30B |
|---|---|---|
| Input ($/Mtok) | $5.00 | $0.00 |
| Output ($/Mtok) | $30.00 | $0.00 |
| Cached input ($/Mtok) | — | — |
| Cost per 1M-token roundtrip (1M in + 1M out) | $35.00 | $0.00 |
Context window & modalities
| Attribute | GPT-5.5 | Granite 4.1 30B |
|---|---|---|
| Context window | 922K tokens | 131K tokens |
| Input modalities | text, image | text |
| Output modalities | text | text |
| Knowledge cutoff | — | — |
Verdict by use case
Coding
Insufficient data
Basis: SWE-bench
No shared coding benchmark.
Reasoning
→ GPT-5.5
Basis: GPQA Diamond
GPT-5.5 93.5% vs Granite 4.1 30B 48.1% on GPQA Diamond.
Math
Insufficient data
Basis: MATH / AIME
No shared math benchmark.
Long context
→ GPT-5.5
Basis: Context window
GPT-5.5 922K tokens vs Granite 4.1 30B 131K tokens.
Cost
→ Granite 4.1 30B
Basis: Input $/Mtok
GPT-5.5 $5/Mtok vs Granite 4.1 30B $0/Mtok input.
Changelog & releases
GPT-5.5
Released 2026-04-23
Granite 4.1 30B
Released 2026-04-29