Generative AI for Image, Video and Voice: Which to Choose?

An AI-generated image costs less than one cent and comes out in two seconds. A synthetic voice reads a sentence in one second. As of October 2026, the price of generating media has become almost zero. What costs money now is choosing the right tool, sorting through the results and avoiding the visual that hurts your brand.

At a glance

• Image: Recraft V4.1 Flash is the cheapest ($0.007) and the fastest (2 s) according to OpenRouter.
• Video: $0.24 per six-second clip with Grok Imagine Video 1.5 Lite; 45 seconds with Gemini Omni 1.1 Flash.
• Voice: Eleven Flash v2.5 (ElevenLabs) responds in 1 second; Voxtral Mini TTS (Mistral) is the cheapest.
• The cost of generation is negligible: judge a tool on its quality on your briefs and its terms for commercial use.

Transparency: this article is published by GENIAL. The results cited come from the public OpenRouter Benchmarks page, accessed on October 14, 2026. For media, OpenRouter publishes cost and speed, without a quality score.

Which generative media AI models are compared in 2026?

OpenRouter evaluates four media families. Each output is judged against the request, then billed per unit.

Source: OpenRouter Benchmarks, October 14, 2026.

How do you choose an AI image generator for marketing?

OpenRouter's image test targets known weaknesses: counting objects, respecting an orientation, writing legible text inside the image. These are exactly the flaws that make a visual unusable in marketing and communications.

Four criteria to choose:

1. Text inside the image. If your visuals contain slogans or prices, test this first: it is the most fragile point.
2. Brand consistency. Can you enforce your colors, your style and your logo from one image to the next?
3. Commercial usage rights. Read the terms of the plan you pay for. Free plans often restrict commercial use.
4. Editing. A tool that modifies a specific area (background, product, text) saves more time than a tool that regenerates everything.

Unit price is no longer a criterion: at less than one cent per image, it is your marketing team's time that costs money.

Is AI-generated video ready for business?

For short clips, yes. A six-second video costs from $0.24 and comes out in under a minute with the fastest models. That is enough for an animated social media visual, a transition or a presentation background.

For a brand film, a product demo or a training video, AI helps with the storyboard and illustration shots, but it does not replace a real shoot. Characters and gestures remain unstable from one shot to the next.

Synthetic voice or voice agent: what is the difference?

A synthetic voice reads a text. A voice agent holds a conversation: it understands the request, checks your tools, answers and takes action. OpenRouter's voice benchmark measures the first building block; a phone reception service needs the whole thing.

For a voice agent, four criteria matter more than the tone of the voice: latency (beyond one second, the conversation becomes painful), languages, the ability to act during the call and integration with your phone system. The GENIAL phone assistant answers 24/7 by phone and in writing, with under 800 ms of latency, in more than 50 languages. It acts during the call (calendar, CRM, ticket, order), plugs into your existing phone system and transfers the call with the context already summarized when a human needs to take over.

What risks should you manage before generating media with AI?

• Impersonation: never generate the voice or face of a real person without their written consent.
• Transparency: the European AI Act requires certain generated content to be labeled, in particular realistic content that could deceive. Plan for a disclosure notice.
• Unapproved tools: your teams are probably already using free generators with personal accounts. Govern them rather than banning them: that is the challenge of Shadow AI.

Where should you start?

Start from a recurring need (social media visuals, an overloaded phone reception) and test two tools for two weeks on your real briefs. To spot the uses that pay off the most, see the 10 most profitable AI use cases for SMBs or take the free AI self-assessment. The general selection method is detailed in choosing AI at work using benchmarks.

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Erwan Simon is CEO and co-founder of GENIAL, a Bordeaux-based company that specializes in the operational rollout of generative AI in SMBs and mid-market companies. He is an accredited AI Expert with Bpifrance (France's public investment bank) and an ambassador of "Osez l'IA," the French government's program to help businesses adopt AI.