Morph V3 Large API262K context

Pricing & specs mirror our live pricing as of July 2026 (pay-as-you-go).

What is Morph V3 Large?

Morph's high-accuracy apply model for complex code edits. ~4,500 tokens/sec with 98% accuracy for precise code transformations. The model requires the prompt to be in the following format: <instruction>{instruction}</instruction> <code>{initial_code}</code>...

Morph V3 Large pricing

Pay-as-you-go on DataLLM Lab — these are our live list prices (identical to the pricing page):

On output price, Morph V3 Large is cheaper than 47% of the 309 models in the catalog.

What Morph V3 Large costs per month

Cost = input price × input volume + output price × output volume. The same five workloads run on every model page, so any two compare directly.

Morph V3 Large vs alternatives

When not to use Morph V3 Large

• It is served by a single provider, so there is less failover headroom during an outage.

Specs

How to call Morph V3 Large

Copyfrom openai import OpenAI
client = OpenAI(base_url="https://api.datallmlab.com/v1", api_key="YOUR_DATALLM_LAB_KEY")
resp = client.chat.completions.create(
    model="morph/morph-v3-large",
    messages=[{"role": "user", "content": "Hello"}],
)
print(resp.choices[0].message.content)

Copycurl https://api.datallmlab.com/v1/chat/completions \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"morph/morph-v3-large","messages":[{"role":"user","content":"Hello"}]}'

Copyimport OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.datallmlab.com/v1", apiKey: process.env.DATALLM_KEY });
const r = await client.chat.completions.create({
  model: "morph/morph-v3-large",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(r.choices[0].message.content);

The same key routes Morph V3 Large and 300+ other models — switch models by changing one string. How OpenAI-compatible APIs work.

Prompting tips for Morph V3 Large

• Be explicit and show the shape of the answer. Spell out format, tone and constraints up front, and include one short example of the output you want — Morph V3 Large follows concrete instructions better than abstract ones.
• Huge 262K context — but anchor the ask. You can paste whole documents or codebases; models attend most to the start and end, so put the key instruction at the top and restate it after long inputs.
• Constrain JSON with a schema. Use response_format / structured outputs rather than "reply in JSON" to get valid, parseable objects every time.

Tips are derived from Morph V3 Large's actual capabilities — context window, tool & JSON support, modality and price tier — not generic advice.

Open-source tools for Morph V3 Large

Popular open-source frameworks and agents to build with Morph V3 Large over the API — star counts pulled from GitHub (July 2026).

Listed by GitHub stars; inclusion is by ecosystem relevance (agent frameworks, SDKs and gateways), not affiliation. Stars change — see each repo for current numbers.

Migrating to Morph V3 Large

Coming from OpenAI or another gateway? On an OpenAI-compatible setup the only changes are base_url → https://api.datallmlab.com/v1 and model → morph/morph-v3-large. Messages, streaming and the rest of your code stay the same. Routing & failover guide.

Rate limits & reliability

Rate limits here are the DataLLM Lab gateway's, not the upstream vendor's. On 429 (rate limited) or 503 (provider busy), retry with exponential backoff. See the error-code guide and failover setup.

Related reading

Frequently asked questions