Free calculator
Subscription vs API: which AI pricing model is cheaper?
Compare monthly plans like ChatGPT Plus, Claude Pro, Google AI Pro, Perplexity Pro, and Microsoft 365 Premium against raw API token costs. The calculator runs locally from our pricing datasets, so the free version does not spend tokens.
Tracking 24 paid subscription plans and 220 API models. Data updated .
Subscriptions win when
One person uses the provider app heavily for chat, research, writing, coding, files, voice, or image tools.
APIs win when
You are building software, automations, internal agents, customer workflows, or anything that needs metered usage.
Mixed setups win when
Humans need a chat product, while repetitive or backend work should route through cheaper API models or local hardware.
Local AI is the third option when API bills get large. If you are considering GPU ownership, use the local AI vs API calculator to include hardware amortization, electricity, idle power, and maintenance time.
Subscriptions vs API baseline
| Subscription | Sub price / mo | API baseline | API cost / mo | Cheaper path |
|---|---|---|---|---|
| ChatGPT Go | $8.00 | — | — | — |
| ChatGPT Plus | $20.00 | GPT-5.6 Sol | $12.60 | API |
| ChatGPT Pro ($100) | $100.00 | GPT-5.6 Sol | $12.60 | API |
| ChatGPT Pro ($200) | $200.00 | GPT-5.6 Sol | $12.60 | API |
| ChatGPT Business | $25.00 | GPT-5.6 Sol | $12.60 | API |
| Claude Pro | $20.00 | Claude Sonnet 5 | $6.30 | API |
| Claude Max (5x) | $100.00 | Claude Opus 5 | $15.75 | API |
| Claude Max (20x) | $200.00 | Claude Opus 5 | $15.75 | API |
| Claude Team | $25.00 | Claude Sonnet 5 | $6.30 | API |
| Claude Team Premium | $125.00 | Claude Sonnet 5 | $6.30 | API |
| Google AI Plus | $4.99 | — | — | — |
| Google AI Pro | $19.99 | Gemini 3.1 ProPreview | $7.20 | API |
| Google AI Ultra 5x | $99.99 | Gemini 3.1 ProPreview | $7.20 | API |
| Google AI Ultra 20x | $199.99 | Gemini 3.1 ProPreview | $7.20 | API |
| SuperGrok | $30.00 | — | — | — |
| SuperGrok Heavy | $300.00 | — | — | — |
| Grok Business | $30.00 | Grok 4.3 | $2.25 | API |
| Perplexity Pro | $20.00 | Sonar Pro | $9.45 | API |
| Perplexity Max | $200.00 | Sonar Pro | $9.45 | API |
| Microsoft 365 Premium | $19.99 | GPT-5.4 | $9.00 | API |
| Microsoft 365 Copilot Business | $21.00 | GPT-5.4 | $9.00 | API |
| GLM Coding Lite | $18.00 | — | — | — |
| GLM Coding Pro | $80.00 | — | — | — |
| GLM Coding Max | $168.00 | — | — | — |
Reliability note: API baselines are explicit per subscription plan. When a provider includes app-only model names or multiple selectable models, the calculator uses the closest tracked API model shown in the table. It does not model hidden message caps, file tools, voice, images, deep research, or regional plan differences.
Cheapest API models for this usage
| Rank | Model | Provider | Monthly cost |
|---|---|---|---|
| 1 | DeepSeek-OCR 2 | novita | $0.0405 |
| 2 | Llama 3.1 8B Instruct | novita | $0.0405 |
| 3 | Llama 3.1 8B Instant | groq | $0.081 |
| 4 | Embed v3 English | cohere | $0.09 |
| 5 | Embed v3 Multilingual | cohere | $0.09 |
| 6 | AutoGLM-Phone-9B-Multilingual | novita | $0.0936 |
| 7 | Qwen3.5 4B | castform | $0.0945 |
| 8 | Command R7B | cohere | $0.1013 |
| 9 | Gemma 3n E4B Instruct | together | $0.108 |
| 10 | Mistral NeMo | novita | $0.1125 |
| 11 | Ministral 3B | mistral | $0.135 |
| 12 | GPT-OSS 20B | together | $0.135 |
| 13 | GLM 5.3 Flash | novita | $0.18 |
| 14 | Qwen3 Coder 30B A3B Instruct | novita | $0.1845 |
| 15 | Llama 3 8B Instruct Lite | together | $0.189 |
Provider subscription pages
These pages target the next layer of search intent: people comparing one provider's plans before deciding whether they need the API.
How to read the result
The calculator estimates monthly input and output tokens from your message volume, prices that workload across our API model database, then compares an explicit API baseline model to each subscription plan.
It is intentionally conservative: it compares token math only. Subscription limits, product features, file tools, voice, deep research, and coding tools can make a subscription worth paying for even when the API is cheaper on raw tokens.
Frequently asked questions
Is ChatGPT Plus cheaper than the OpenAI API?
For heavy personal chat use, ChatGPT Plus can be cheaper because the monthly fee smooths out usage. For production apps, automations, agents, or anything that needs programmatic access, the OpenAI API is usually the correct comparison because subscriptions do not replace API billing.
When is the API cheaper than a subscription?
The API tends to win when usage is low, when you can route simple work to cheaper models, or when you are building software for many users. Subscriptions tend to win for one person doing frequent interactive work inside a provider app.
Does this calculator call an AI model?
No. The public calculator is deterministic math using our monitored pricing JSON and subscription dataset. It does not spend tokens.
What would a paid version add?
A paid audit can analyze exported API logs, billing CSVs, or real prompt samples to estimate usage, classify workload types, and recommend a cheaper subscription/API mix. That is where token-spending analysis makes sense.