submodel
Access 9 submodel models through Mastra’s model router. Authentication is handled automatically using the SUBMODEL_INSTAGEN_ACCESS_KEY
environment variable.
Learn more in the submodel documentation .
SUBMODEL_INSTAGEN_ACCESS_KEY=your-api-key
import { Agent } from "@mastra/core";
const agent = new Agent({
name: "my-agent",
instructions: "You are a helpful assistant",
model: "submodel/Qwen/Qwen3-235B-A22B-Instruct-2507"
});
// Generate a response
const response = await agent.generate("Hello!");
// Stream a response
const stream = await agent.stream("Tell me a story");
for await (const chunk of stream) {
console.log(chunk);
}
Mastra uses the OpenAI-compatible /chat/completions
endpoint. Some provider-specific features may not be available. Check the submodel documentation for details.
Models
Model | Context | Tools | Reasoning | Image | Audio | Video | Input $/1M | Output $/1M |
---|---|---|---|---|---|---|---|---|
submodel/openai/gpt-oss-120b | 131K | $0.10 | $0.50 | |||||
submodel/Qwen/Qwen3-235B-A22B-Instruct-2507 | 262K | $0.20 | $0.30 | |||||
submodel/Qwen/Qwen3-Coder-480B-A35B-Instruct-FP8 | 262K | $0.20 | $0.80 | |||||
submodel/Qwen/Qwen3-235B-A22B-Thinking-2507 | 262K | $0.20 | $0.60 | |||||
submodel/zai-org/GLM-4.5-FP8 | 131K | $0.20 | $0.80 | |||||
submodel/zai-org/GLM-4.5-Air | 131K | $0.10 | $0.50 | |||||
submodel/deepseek-ai/DeepSeek-R1-0528 | 75K | $0.50 | $2 | |||||
submodel/deepseek-ai/DeepSeek-V3.1 | 75K | $0.20 | $0.80 | |||||
submodel/deepseek-ai/DeepSeek-V3-0324 | 75K | $0.20 | $0.80 |
Advanced Configuration
Custom Headers
const agent = new Agent({
name: "custom-agent",
model: {
url: "https://llm.submodel.ai/v1/chat/completions",
modelId: "Qwen/Qwen3-235B-A22B-Instruct-2507",
apiKey: process.env.SUBMODEL_INSTAGEN_ACCESS_KEY,
headers: {
"X-Custom-Header": "value"
}
}
});
Dynamic Model Selection
const agent = new Agent({
name: "dynamic-agent",
model: ({ runtimeContext }) => {
const useAdvanced = runtimeContext.task === "complex";
return useAdvanced
? "submodel/Qwen/Qwen3-235B-A22B-Instruct-2507"
: "submodel/Qwen/Qwen3-235B-A22B-Thinking-2507";
}
});