ChatGPT
The default AI assistant, backed by the GPT-5.6 model family
Best for:general assistantcodingresearchteams
ChatGPT is OpenAI's assistant and still the widest-reach product in the category. The paid tiers route to the GPT-5.6 family (Sol, Terra, Luna), add reasoning modes, code execution, file analysis, image generation, and custom GPTs. Its main advantage is breadth: it is the most feature-complete general assistant rather than the strongest at any single job.
Workflow Fit
This page is optimized for platform selection: who this tool is best for, the practical workflows it supports, and the models available under the hood.
Best use cases
general assistantcodingresearchteams
Provider & model access
Provider: OpenAI
Free tier: Yes
API access: Yes
Pros
- Broadest feature set of any assistant (code execution, files, images, voice, custom GPTs)
- Largest published context window of the closed flagships at 1.05M tokens
- Three clearly separated price tiers from $0.20 to $5.00 per 1M input tokens
- Deepest third-party integration and tooling ecosystem
Cons
- Highest output-token pricing of the mainstream flagships at $30 / 1M on Sol
- Model tier naming (Sol / Terra / Luna) is harder to reason about than a simple ladder
- No open-weight route — full vendor lock-in
Specifications
- Free Tier
- Yes
- API Access
- Yes
Features
Context Window1.05M tokens
Vision Input
Reasoning Mode
Open Weights
Web Search
API Access
Pricing
| Plan | Price | Limits | Key Features |
|---|---|---|---|
| Free | Free | — | GPT-5.6 Luna access • Limited reasoning • Web browsing |
| Plus | $20/mo | — | GPT-5.6 Terra and Sol access • Advanced reasoning • Code execution |
| Pro | $200/mo | — | Unlimited Sol access • Extended reasoning • Priority capacity |
| API (pay-as-you-go) | Custom | — | $0.20-$5.00 / 1M input • $1.20-$30.00 / 1M output • Full model family |
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Company
- Company
- OpenAI
- Founded
- 2015
- Headquarters
- San Francisco, USA
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