Parasail

Overview

Parasail is an OpenAI-compatible provider offering high-performance inference through DeepIntShield. Key characteristics:

• OpenAI API compatibility - Identical request/response format
• Full streaming support - Server-Sent Events with usage tracking
• Tool calling - Complete function definition and execution
• Parameter filtering - Unsupported OpenAI-specific fields are removed before the call
• Responses API - Supported with the same parameters as Chat Completions

Supported Operations

Operation	Non-Streaming	Streaming	Endpoint
Chat Completions	✅	✅	/v1/chat/completions
Responses API	✅	✅	/v1/chat/completions
List Models	✅	-	/v1/models
Text Completions	❌	❌	-
Embeddings	❌	❌	-
Image Generation	❌	❌	-
Speech (TTS)	❌	❌	-
Transcriptions (STT)	❌	❌	-
Files	❌	❌	-
Batch	❌	❌	-

Note

Unsupported Operations (❌): Text Completions, Embeddings, Image Generation, Speech, Transcriptions, Files, and Batch are not supported by the upstream Parasail API. These return an unsupported-operation error.

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1. Chat Completions

Request Parameters

Parasail supports all standard OpenAI chat completion parameters. For full parameter reference and behavior, see OpenAI Chat Completions.

The following parameters are not supported by Parasail and are ignored: prompt_cache_key, verbosity, store, service_tier.

Reasoning Parameter

Reasoning via standard OpenAI format:

{
  "model": "parasail-llama-33-70b-fp8",
  "messages": [...],
  "reasoning_effort": "high"
}

Parasail supports all standard OpenAI message types, tools, responses, and streaming formats. For details on message handling, tools, responses, and streaming, refer to OpenAI Chat Completions.

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2. Responses API

Parasail supports the Responses API with the same parameter support as Chat Completions.

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3. List Models

Lists available Parasail models with capabilities and context information.

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Unsupported Features

Feature	Reason
Text Completions	Not offered by Parasail API
Embedding	Not offered by Parasail API
Image Generation	Not offered by Parasail API
Speech/TTS	Not offered by Parasail API
Transcription/STT	Not offered by Parasail API
Batch Operations	Not offered by Parasail API
File Management	Not offered by Parasail API

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Caveats

Cache Control Stripped

Severity: Medium Behavior: Cache control directives are removed from messages Impact: Prompt caching features don’t work

Parameter Filtering

Severity: Low Behavior: OpenAI-specific parameters filtered out Impact: prompt_cache_key, verbosity, store removed

User Field Size Limit

Severity: Low Behavior: User field > 64 characters silently dropped Impact: Longer user identifiers are lost