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Inkling 2 Small vs Phi 4 Reasoning Plus

Inkling 2 Small leads the LLM Stats Score 47.2 to 14.4.

Thinking Machines Lab · Microsoft · Updated for 2026

Which is better?

Inkling 2 Small leads the overall LLM Stats Score 47.2 to 14.4, ranking #39 overall.

In the 1 individual benchmarks reported for both models, Inkling 2 Small wins 1; 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 Inkling 2 Small

  • overall performance matters — it scores 47.2 and ranks #39 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Nov 2026

Choose Phi 4 Reasoning Plus

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Core performance indexes
47.2
#39
14.4
#273
47.9
#24
14.8
#265
36.3
#35
5.5
#230
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.30 / M
— / M
Output price
$1.00 / M
— / M
Context window
256,000
—

Individual benchmarks

11 reported for Inkling 2 Small · 11 for Phi 4 Reasoning Plus

1 shared

Inkling 2 Small outperforms in 1 benchmarks (GPQA), while Phi 4 Reasoning Plus is better at 0 benchmarks.

Inkling 2 Small significantly outperforms across most benchmarks.

Mon Nov 09 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

580.0B diff

Inkling 2 Small has 580.0B more parameters than Phi 4 Reasoning Plus, making it 4142.9% larger.

Thinking Machines Lab
Inkling 2 Small
594.0Bparameters
Microsoft
Phi 4 Reasoning Plus
14.0Bparameters
594.0B
Inkling 2 Small
14.0B
Phi 4 Reasoning Plus

Context Window

Maximum input and output token capacity

Only Inkling 2 Small specifies input context (256,000 tokens).

Thinking Machines Lab
Inkling 2 Small
Input256,000 tokens
Output- tokens
Microsoft
Phi 4 Reasoning Plus
Input- tokens
Output- tokens
Mon Nov 09 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Inkling 2 Small supports multimodal inputs, whereas Phi 4 Reasoning Plus does not.

Inkling 2 Small can handle both text and other forms of data like images, making it suitable for multimodal applications.

Inkling 2 Small

Text
Images
Audio
Video

Phi 4 Reasoning Plus

Text
Images
Audio
Video

License

Usage and distribution terms

Inkling 2 Small is licensed under a proprietary license, while Phi 4 Reasoning Plus uses MIT.

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

Inkling 2 Small

Proprietary

Closed source

Phi 4 Reasoning Plus

MIT

Open weights

Release Timeline

When each model was launched

Inkling 2 Small was released on 2026-11-05, while Phi 4 Reasoning Plus was released on 2025-04-30.

Inkling 2 Small is 18 months newer than Phi 4 Reasoning Plus.

Inkling 2 Small

Nov 5, 2026

3 days ago

1.5yr newer
Phi 4 Reasoning Plus

Apr 30, 2025

1.5 years ago

Knowledge Cutoff

When training data ends

Phi 4 Reasoning Plus has a documented knowledge cutoff of 2025-03-01, while Inkling 2 Small's cutoff date is not specified.

We can confirm Phi 4 Reasoning Plus's training data extends to 2025-03-01, but cannot make a direct comparison without Inkling 2 Small's cutoff date.

Inkling 2 Small

—

Phi 4 Reasoning Plus

Mar 2025

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Inkling 2 Small and Phi 4 Reasoning Plus side-by-side, then vote on the output you prefer.

Inkling 2 Small
✓ Preferred
Phi 4 Reasoning Plus
Open in Playground

FAQ

Common questions about Inkling 2 Small vs Phi 4 Reasoning Plus.

Which is better, Inkling 2 Small or Phi 4 Reasoning Plus?

Inkling 2 Small leads the LLM Stats Score 47.2 to 14.4. Inkling 2 Small is made by Thinking Machines Lab and Phi 4 Reasoning Plus is made by Microsoft. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Inkling 2 Small compare to Phi 4 Reasoning Plus in benchmarks?

Inkling 2 Small scores GPQA: 93.0%, BrowseComp: 90.2%, CharXiv-R: 85.6%, MCP Atlas: 85.0%, SWE-Bench Verified: 82.2%. Phi 4 Reasoning Plus scores FlenQA: 97.9%, HumanEval+: 92.3%, IFEval: 84.9%, OmniMath: 81.9%, AIME 2024: 81.3%.

What are the context window sizes for Inkling 2 Small and Phi 4 Reasoning Plus?

Inkling 2 Small supports 256K tokens and Phi 4 Reasoning Plus 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 Inkling 2 Small and Phi 4 Reasoning Plus?

Key differences include LLM Stats Score (47.2 vs 14.4), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Inkling 2 Small and Phi 4 Reasoning Plus?

Inkling 2 Small is developed by Thinking Machines Lab and Phi 4 Reasoning Plus is developed by Microsoft.