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Morph: Morph V3 Fast
morph/morph-v3-fastTry Morph: Morph V3 Fast now
Runs on your balance at the prices above. New accounts start with free usage.
One API. Every model.
Session cost $0.00
Settings
Advanced parameters
Morph: Morph V3 Fast at a glance
- Input price is 78% higher than the median of 434 Text models.
- Context window of 262,144 tokens, enough for long documents and multi-turn conversations.
- Supports structured JSON output with a schema.
- A typical request (1,000 input / 500 output tokens) costs about $0.00490.
About Morph: Morph V3 Fast
Morph: Morph V3 Fast is a text model from Morph, released by the provider on 7 July 2025. It belongs to the text category and is described by Morph as its fastest apply model for code edits. The model is built around a specific job: applying an edit snippet to an initial piece of code, guided by an instruction.
The model takes text as input and returns text as output. It has a context window of 81,920 tokens and a maximum output of 38,000 tokens. According to the provider, it runs at roughly 10,500 tokens per second with 96% accuracy for rapid code transformations. One important detail is that it requires the prompt to follow a fixed format: an instruction block, a code block, and an update block, written as <instruction>{instruction}</instruction> <code>{initial_code}</code> <update>{edit_snippet}</update>. The supported request parameters are max_tokens, stop and temperature.
The use cases follow directly from that design. Because the model is an apply model, it fits workflows where an existing file or snippet needs to be changed according to a written instruction and a proposed edit. That includes automated code refactoring, applying patches or suggestions produced by another tool, and batch transformations across many files where speed matters. The large context window means a substantial file can be supplied as the initial code, and the 38,000 token output ceiling allows for large rewritten results. It is not a general chat or reasoning model, so tasks like open ended conversation, summarisation or question answering are outside what the provider describes.
You call it through api14's OpenAI-compatible API using the model id "morph/morph-v3-fast". Because the interface is OpenAI-compatible, existing OpenAI SDKs and clients work with only the base URL and key changed. In the request you can set max_tokens, stop and temperature. Remember to build the prompt in the required three part format, since the model expects the instruction, the initial code and the edit snippet in those tags.
The main limitation to keep in mind is specialisation. Morph V3 Fast is tuned for code edits, so if your task is general text generation, dialogue or analysis, a general purpose text model is likely a better fit. The strict prompt format also means you cannot send arbitrary messages and expect useful output. If your workload is applying edits to code at high speed, this model is aimed squarely at that.
How to call the Morph: Morph V3 Fast API
- Create an API key in your dashboard.
- Install the official openai SDK for your language.
- Set baseURL to https://api14.com/api/v1 and model to "morph/morph-v3-fast".
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
const result = await client.chat.completions.create({
"model": "morph/morph-v3-fast",
"messages": [
{
"role": "user",
"content": "Explain vector databases in two sentences."
}
]
});
console.log(result.choices[0].message.content);
Supported parameters
logprobsmax_tokensresponse_formatstopstructured_outputstemperaturetop_logprobsSpecifications
- Context length
- 262,144
- Max output
- 131,072
- Input
- text
- Output
- text
Requests on api14 · last 7 days
Morph: Morph V3 Fast: frequently asked questions
- How much does the Morph: Morph V3 Fast API cost?
- Morph: Morph V3 Fast costs Input $2.80 / 1M tokens. It is charged from your USD balance only for successful requests; failed requests are free.
- What is the context window of Morph: Morph V3 Fast?
- Morph: Morph V3 Fast reads up to 262,144 tokens per request: prompt, history and documents together. It writes up to 131,072 output tokens per response.
- What can Morph: Morph V3 Fast do?
- Morph: Morph V3 Fast accepts text and returns text. It supports structured JSON output.
- How do I call Morph: Morph V3 Fast from my code?
- Point any OpenAI SDK at https://api14.com/api/v1 and set the model to "morph/morph-v3-fast". No other code changes. Copy a ready example from the code panel on this page.
- What are alternatives to Morph: Morph V3 Fast?
- Comparable Text models at a similar price: Mistral: Mistral Large 3 2512, OpenAI: GPT-4.1 Mini, Perplexity: Sonar. Each runs through the same API key, so switching is one string.
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