AI model comparison

Granite 4.2 8B vs DeepSeek V4 Flash 0423

Side by side comparison of Granite 4.2 8B and DeepSeek V4 Flash 0423 on pricing, benchmark scores, context window, and more.

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.

Input / 1M
$0.06
Output / 1M
$0.15
Context
131K

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window.

Input / 1M
$0.09
Output / 1M
$0.18
Context
1.05M

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At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

ibm-granite logo

Granite 4.2 8B

1.4x cheaper for a typical chat

Higher intelligence score

Not available

Not enough benchmark data

Larger context window

deepseek logo

DeepSeek V4 Flash 0423

1.05M vs 131K tokens

Newer release

ibm-granite logo

Granite 4.2 8B

Released August 31, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

ibm-granite logoGranite 4.2 8B5.1
deepseek logoDeepSeek V4 Flash 0423Not available

Coding index

ibm-granite logoGranite 4.2 8B22.4
deepseek logoDeepSeek V4 Flash 042356.2

Agentic index

ibm-granite logoGranite 4.2 8B1.3
deepseek logoDeepSeek V4 Flash 042322.2

Pricing

Granite 4.2 8B vs DeepSeek V4 Flash 0423 API pricing

Per-token API rates. Cheaper option highlighted.

Metricibm-granite logoGranite 4.2 8Bdeepseek logoDeepSeek V4 Flash 0423
Input tokensPer 1M tokens$0.06$0.09
Output tokensPer 1M tokens$0.15$0.18
Cached input (read)Per 1M tokens$0.02$0.02
Cache writePer 1M tokensNot availableNot available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

ibm-granite logoGranite 4.2 8B$0.19
deepseek logoDeepSeek V4 Flash 0423$0.27

Coding task

30K in, 4K out

ibm-granite logoGranite 4.2 8B$2.40$1.05 cached
deepseek logoDeepSeek V4 Flash 0423$3.46$1.27 cached

Long document summary

150K in, 2K out

ibm-granite logoGranite 4.2 8B$9.30$2.55 cached
deepseek logoDeepSeek V4 Flash 0423$14.01$3.09 cached

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricibm-granite logoGranite 4.2 8Bdeepseek logoDeepSeek V4 Flash 0423
Context window131K tokens1.05M tokens
Max output118K tokens944K tokens
Input typesTextText
Output typesTextText
Reasoning effort levelsHigh, Low, NoneExtra high, High, None
Default reasoning effortHighHigh
Release dateAugust 31, 2026April 24, 2026

Features

Supported features

API features available for each model.

Metricibm-granite logoGranite 4.2 8Bdeepseek logoDeepSeek V4 Flash 0423
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedSupported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Granite 4.2 8B is 1.4x cheaper for a typical chat. DeepSeek V4 Flash 0423 has the larger context window (1.05M vs 131K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Granite 4.2 8B or DeepSeek V4 Flash 0423 cheaper?

Granite 4.2 8B is cheaper for a typical chat (2K input tokens and 500 output tokens). Granite 4.2 8B costs $0.06 per 1M input tokens and $0.15 per 1M output tokens, while DeepSeek V4 Flash 0423 costs $0.09 per 1M input tokens and $0.18 per 1M output tokens.

Which has a bigger context window, Granite 4.2 8B or DeepSeek V4 Flash 0423?

DeepSeek V4 Flash 0423 supports up to 1.05M tokens of context, compared with 131K for Granite 4.2 8B.

Can I use Granite 4.2 8B and DeepSeek V4 Flash 0423 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Granite 4.2 8B and DeepSeek V4 Flash 0423 answer side by side and keep the better response.

ibm-granite logodeepseek logo

Why choose? Ask both.

Send one prompt to Granite 4.2 8B and DeepSeek V4 Flash 0423 at the same time. Compare the answers side by side and keep the best one.