Mistral Medium 3.5 API
About
Build advanced reasoning agents with Mistral Medium 3.5, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $1.50/1M input and $7.50/1M output tokens, native tool calling support, open weights architecture. Access Mistral Medium 3.5 via the Pioneer API with up to 131K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
262K
Tokens
Input Limit
262K
Tokens
Max Output
131K
Tokens
Pricing
Standard (per 1M tokens)
Input
$1.50
Output
$7.50
Caching (per 1M tokens)
Read
$1.50
Write
$1.50
Frequently Asked Questions
Mistral Medium 3.5 by Pioneer costs $1.50 per 1M input tokens and $7.50 per 1M output tokens. Cached reads cost $1.50 per 1M tokens. Cache writes cost $1.50 per 1M tokens.
Model Details
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
PIONEER_API_KEY
API Base URL
https://api.pioneer.ai/v1