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IBM Granite 4.2 8B vs Phi 4 Reasoning

IBM Granite 4.2 8B leads the LLM Stats Score 19.3 to 11.5.

IBM · Microsoft · Updated for 2026

Which is better?

IBM Granite 4.2 8B leads the overall LLM Stats Score 19.3 to 11.5, ranking #224 overall.

In the 3 individual benchmarks reported for both models, Phi 4 Reasoning wins 2; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose IBM Granite 4.2 8B

  • overall performance matters — it scores 19.3 and ranks #224 on LLM Stats
  • you want the most recent training data — it shipped Aug 2026

Choose Phi 4 Reasoning

  • you value its reported benchmark strengths — it wins 2 of 3 exact shared results

At a glance

The differences that matter most.

Core performance indexes
19.3
#224
11.5
#280
17.1
#235
12.1
#269
2.8
#245
6.2
#213
Cost, coverage & limits
Benchmark wins
1 of 3
2 of 3
Input price
$0.06 / M
— / M
Output price
$0.25 / M
— / M
Context window
131,072
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
IBM Granite 4.2 8B
Phi 4 Reasoning
20.8#164
13.6#236
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

18 reported for IBM Granite 4.2 8B · 11 for Phi 4 Reasoning

3 shared

IBM Granite 4.2 8B outperforms in 1 benchmarks (AIME 2025), while Phi 4 Reasoning is better at 2 benchmarks (GPQA, MMLU-Pro).

Phi 4 Reasoning shows notably better performance in the majority of benchmarks.

Sat Oct 24 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

6.0B diff

Phi 4 Reasoning has 6.0B more parameters than IBM Granite 4.2 8B, making it 75.0% larger.

IBM
IBM Granite 4.2 8B
8.0Bparameters
Microsoft
Phi 4 Reasoning
14.0Bparameters
8.0B
IBM Granite 4.2 8B
14.0B
Phi 4 Reasoning

Context Window

Maximum input and output token capacity

Only IBM Granite 4.2 8B specifies input context (131,072 tokens). Only IBM Granite 4.2 8B specifies output context (131,072 tokens).

IBM
IBM Granite 4.2 8B
Input131,072 tokens
Output131,072 tokens
Microsoft
Phi 4 Reasoning
Input- tokens
Output- tokens
Sat Oct 24 2026 • llm-stats.com

License

Usage and distribution terms

IBM Granite 4.2 8B is licensed under Apache 2.0, while Phi 4 Reasoning uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

IBM Granite 4.2 8B

Apache 2.0

Open weights

Phi 4 Reasoning

MIT

Open weights

Release Timeline

When each model was launched

IBM Granite 4.2 8B was released on 2026-08-25, while Phi 4 Reasoning was released on 2025-04-30.

IBM Granite 4.2 8B is 16 months newer than Phi 4 Reasoning.

IBM Granite 4.2 8B

Aug 25, 2026

1 months ago

1.3yr newer
Phi 4 Reasoning

Apr 30, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Phi 4 Reasoning has a documented knowledge cutoff of 2025-03-01, while IBM Granite 4.2 8B's cutoff date is not specified.

We can confirm Phi 4 Reasoning's training data extends to 2025-03-01, but cannot make a direct comparison without IBM Granite 4.2 8B's cutoff date.

IBM Granite 4.2 8B

—

Phi 4 Reasoning

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against IBM Granite 4.2 8B and Phi 4 Reasoning side-by-side, then vote on the output you prefer.

IBM Granite 4.2 8B
✓ Preferred
Phi 4 Reasoning
Open in Playground

FAQ

Common questions about IBM Granite 4.2 8B vs Phi 4 Reasoning.

Which is better, IBM Granite 4.2 8B or Phi 4 Reasoning?

IBM Granite 4.2 8B leads the LLM Stats Score 19.3 to 11.5. IBM Granite 4.2 8B is made by IBM and Phi 4 Reasoning is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does IBM Granite 4.2 8B compare to Phi 4 Reasoning in benchmarks?

IBM Granite 4.2 8B scores AIME 2025: 86.7%, RULER 64k: 81.0%, IFBench: 79.3%, HMMT25: 78.3%, MMLU-Pro: 74.0%. Phi 4 Reasoning scores FlenQA: 97.7%, HumanEval+: 92.9%, IFEval: 83.4%, OmniMath: 76.6%, AIME 2024: 75.3%.

What are the context window sizes for IBM Granite 4.2 8B and Phi 4 Reasoning?

IBM Granite 4.2 8B supports 131K tokens and Phi 4 Reasoning supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between IBM Granite 4.2 8B and Phi 4 Reasoning?

Key differences include LLM Stats Score (19.3 vs 11.5), licensing (Apache 2.0 vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes IBM Granite 4.2 8B and Phi 4 Reasoning?

IBM Granite 4.2 8B is developed by IBM and Phi 4 Reasoning is developed by Microsoft.