OpenAI: GPT-5.3 Chat Latest
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Cheapest input
$1.75
$/MTok · models.dev
Cheapest output
$14
$/MTok
Context
400K
tokens
Sources
2
6 listings
Sources
Same model, different sources. Our first-party rate is listed first, then router and aggregator rows stay separate so you can see the spread instead of a single blended number.
| Source | Provider | Input | Output | Cache read | Context |
|---|---|---|---|---|---|
| models.devcheapestopenai/gpt-5.3-chat-latest | Merge Gateway | $1.75 | $14 | $0.175 | 128K |
| models.devgpt-5.3-chat-latest | OpenAI | $1.75 | $14 | $0.175 | 128K |
| models.devopenai/gpt-5.3-chat-latest | Opper | $1.75 | $14 | $0.175 | 128K |
| models.devgpt-5.3-chat-latest | 302.AI | $1.75 | $14 | $0 | 128K |
| models.devgpt-5.3-chat-latest | Abacus | $1.75 | $14 | $0 | 400K |
| LiteLLMgpt-5.3-chat-latest | N/A | $1.75 | $14 | $0.175 | N/A |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- In: pdf
- Out: text
Knowledge cutoff: 2025-08-31Released: 2026-03-03Family: gpt
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Data and list-price estimates may contain mistakes. Not investment advice.