kitio.aiOpenAI API vs TextSynth
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenAI API starts at See pricing page and TextSynth starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Responses API
- Agents SDK
- Realtime voice API
- Image and audio models
- Batch API
- Fine-tuning and evals
- Text completion and chat API
- Image generation
- Speech to text
- Text to speech
- Embeddings
- Web playground
| Feature | OpenAI API | TextSynth |
|---|---|---|
| Best for | Developer API for GPT, reasoning, image, audio and embedding models | REST API and playground for open language and image models |
| Category | Models & APIs | Models & APIs |
| Pricing model | Paid | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | No | Yes |
| Made by | OpenAI | TextSynth |
| Based in | United States | France |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
OpenAI API starts at See pricing page and TextSynth starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
GPT-6 Luna
$0.10 / $0.50 per 1M tokens
- Input / output
- Fast, low-cost model
- 1.05M context
GPT-6.1 Sol
$2 / $10 per 1M tokens
- Input / output
- Balanced model
- 1.05M context
GPT-6 Astra
$10 / $50 per 1M tokens
- Input / output
- Most capable model
- 1.05M context
2 plans
Free
Free
- Rate-limited access to all models
- 200 tokens per request
- 3-minute transcription limit
Standard
Pay per request
- No rate limits
- Priced per million tokens
- Per-image and per-minute pricing
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
OpenAI API
- Wide model range in one API
- Mature SDKs and docs
- Built-in tools like web search
- Top models are costly at scale
- Rate limits depend on spend tier
- Model names change frequently
TextSynth
- Pay-per-use prices, no subscription
- Open models including Llama and Mistral
- Servers located in France
- Free plan logs all requests
- Free plan caps output at 200 tokens
- Mixed USD and EUR price listings
Which one should you choose?
Choose OpenAI API if you want:
- Wide model range in one API
- Mature SDKs and docs
- Built-in tools like web search
Watch out: top models are costly at scale.
Choose TextSynth if you want:
- Pay-per-use prices, no subscription
- Open models including Llama and Mistral
- Servers located in France
Watch out: free plan logs all requests.
OpenAI API vs TextSynth FAQ
What is the difference between OpenAI API and TextSynth?
OpenAI API: Developer API for GPT, reasoning, image, audio and embedding models. TextSynth: REST API and playground for open language and image models. Both are models & apis tools.
Is OpenAI API or TextSynth cheaper?
OpenAI API starts at See pricing page and TextSynth starts at See pricing page. Check both pricing pages for current plans.
Do OpenAI API and TextSynth have free plans?
OpenAI API: No. TextSynth: Yes.
Who makes OpenAI API?
OpenAI API is made by OpenAI, based in United States.
Who makes TextSynth?
TextSynth is made by TextSynth, based in France.
Which should I choose, OpenAI API or TextSynth?
Choose OpenAI API if you value wide model range in one api and mature sdks and docs. Choose TextSynth if you value pay-per-use prices, no subscription and open models including llama and mistral.