AI Models · Open-Source vs Paid

Granite 4.2 8B Open vs Sonar Reasoning Pro Paid

Granite 4.2 8B vs Sonar Reasoning Pro compared — price per token, context window, multimodality, openness and which to choose. Can the open-source model replace the paid one? Full 2026 breakdown.

Sonar Reasoning Pro — full profile ›

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

Granite 4.2 8BOpenIBM

$0.06 /M input
$0.25 /M outputNo per-token fees if you self-host

TypeOpen-weight

Context window131K tokens

MultimodalNo

Self-hostYes

Sonar Reasoning ProPaidPerplexity

$2 /M input
$8 /M outputManaged API (no infra to run)

TypeProprietary

Context window128K tokens

MultimodalYes

Self-hostNo

Choose Granite 4.2 8B if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Sonar Reasoning Pro if you want frontier capability through a managed API with zero infrastructure to run.

Granite 4.2 8B vs Sonar Reasoning Pro specs

Spec	Granite 4.2 8B	Sonar Reasoning Pro	Winner
Maker	IBM	Perplexity	–
Type	Open-weight	Proprietary	Granite 4.2 8B
Context window	131K tokens	128K tokens	Granite 4.2 8B
Input price	$0.06/M · free self-host	$2/M	Granite 4.2 8B
Output price	$0.25/M · free self-host	$8/M	Granite 4.2 8B
Vision / multimodal	No	Yes	Sonar Reasoning Pro
Tool / function calling	Yes	No	Granite 4.2 8B
Self-hostable	Yes	No (API only)	Granite 4.2 8B
License	Apache 2.0	Proprietary	Granite 4.2 8B

Price gap & when to choose each

32×cheaper per output token

Granite 4.2 8B is ~32× cheaper than Sonar Reasoning Pro on output tokens ($0.25 vs $8 per M tokens).

Choose Granite 4.2 8B if…

You want to self-host or run on your cloud
You need the longer 131K context window
You prioritize data privacy & control
You want the lowest operating costs
You are building open or reproducible AI

Choose Sonar Reasoning Pro if…

You want frontier performance through a managed API
You value reliability & ecosystem
You don't want to manage infrastructure

Feature comparison

Capability	Granite 4.2 8B	Sonar Reasoning Pro
Open weights (downloadable)	✓	✗
Self-hostable	✓	✗
Runs fully offline	✓	✗
Vision / multimodal	✗	✓
Tool / function calling	✓	✗
1M+ context window	✗	✗

Benchmarks: Granite 4.2 8B vs Sonar Reasoning Pro

Independent benchmark scores measured by Artificial Analysis. Higher is better (except latency).

Granite 4.2 8B

Sonar Reasoning Pro

Intelligence index

11.8

Coding index

22.4

–

GPQA

63.1%

–

Humanity's Last Exam

9.7%

–

Long Context Reasoning

45%

–

SciCode

31.5%

–

τ-Bench Banking

7.6%

–

Terminal-Bench

18.4%

–

MATH-500

–

95.7%

AIME

–

79%

Speed

95.3 tok/s

0 tok/s

Latency

0.25s

Intelligence per $

110.3

–

Benchmark data by Artificial Analysis.

How Granite 4.2 8B and Sonar Reasoning Pro score

🏆 Best value & openness: Granite 4.2 8B (4.4 vs 2.6 / 5)

Criterion	Granite 4.2 8B	Sonar Reasoning Pro
Cost-efficiency	5.0	3.5
Context window	3.5	3.5
Openness	5.0	1.5
Self-hosting	5.0	1.0
Multimodality	3.5	3.5

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

Granite 4.2 8B Open

IBM · Open-weight

Granite 4.2 8B is a dense reasoning model from IBM. It is suited for mathematics, code generation, multilingual dialogue, and agentic workflows that need multi-step reasoning. It supports full, low-effort,...

Sonar Reasoning Pro Paid

Perplexity · Proprietary

Note: Sonar Pro pricing includes Perplexity search pricing. See [details here](https://docs.perplexity.ai/guides/pricing#detailed-pricing-breakdown-for-sonar-reasoning-pro-and-sonar-pro) Sonar Reasoning Pro is a premier reasoning model powe

Other models in these families

These variants are tracked but not compared here — one page per family keeps the comparison readable.

Other variants tracked

Granite 4.0 Micro

Frequently asked questions

Is Granite 4.2 8B as good as Sonar Reasoning Pro?

Granite 4.2 8B is open-weight and competitive on many tasks, but Sonar Reasoning Pro may still lead on the hardest reasoning and agentic work. The gap keeps narrowing — benchmark both on your actual use case before deciding.

Can I run Granite 4.2 8B locally?

Yes. Granite 4.2 8B has open weights, so you can self-host it on your own GPUs or run it via a low-cost API. Sonar Reasoning Pro is API-only and cannot be self-hosted.

How much cheaper is Granite 4.2 8B?

Granite 4.2 8B costs $0.25/M output vs $8/M for Sonar Reasoning Pro — roughly 32x cheaper via API, and free if you self-host.

Granite 4.2 8B vs Sonar Reasoning Pro — which should I pick in 2026?

Choose Granite 4.2 8B if you want to self-host, keep your data private and skip per-token fees — it's open-weight and runs on your own hardware. Choose Sonar Reasoning Pro if you want frontier capability through a managed API with zero infrastructure to run.

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