What is the difference between Fireworks AI and OpenAI?

Fireworks AI and OpenAI are both cloud GPU providers offering different pricing models, features, and GPU availability. Use our comparison tool to see real-time pricing and feature differences.

Which is cheaper: Fireworks AI or OpenAI?

Pricing varies by GPU model and usage requirements. Check our real-time comparison table to find the best deals for your specific needs.

Can I switch between Fireworks AI and OpenAI?

Yes, both providers offer flexible cloud GPU services. However, consider factors like data transfer costs, setup time, and specific features when switching between providers.

Fireworks AI vs OpenAI

Compare LLM inference API pricing between Fireworks AI and OpenAI. Find the best rates for AI training, inference, and ML workloads.

Fireworks AI

Provider 1

Models Available

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OpenAI

Provider 2

Models Available

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Comparison Overview

Total LLM Models

Fireworks AI Models

OpenAI Models

Direct Comparisons

LLM API Pricing Comparison

Total models: 32Both available: 0Fireworks AI: 4OpenAI: 28

Showing 15 of 32 models

Prices per 1M tokens · Last updated: 10/26/2026, 2:02:35 AM

Model ↑	Fireworks AI	OpenAI	Input Diff ↕
DeepSeek V4.1 Flash DeepSeek	$0.300 in $1.20 out	Not available	—
GLM-5.3 Z.ai	$1.40 in $4.40 out	Not available	—
GLM-5.3-Flash Z.ai	$0.150 in $0.500 out	Not available	—
GPT-3.5 Turbo OpenAI	Not available	$0.500 in $1.50 out	—
GPT-4.1 OpenAI	Not available	$2.00 in $8.00 out	—
GPT-4.1 mini OpenAI	Not available	$0.400 in $1.60 out	—
GPT-4.1 nano OpenAI	Not available	$0.100 in $0.400 out	—
GPT-4o OpenAI	Not available	$2.50 in $10.00 out	—
GPT-4o mini OpenAI	Not available	$0.150 in $0.600 out	—
GPT-5 OpenAI	Not available	$1.25 in $10.00 out	—
GPT-5 mini OpenAI	Not available	$0.250 in $2.00 out	—
GPT-5 Nano OpenAI	Not available	$0.050 in $0.400 out	—
GPT-5 Pro OpenAI	Not available	$15.00 in $120.00 out	—
GPT-5.1 OpenAI	Not available	$1.25 in $10.00 out	—
GPT-5.2 OpenAI	Not available	$1.75 in $14.00 out	—

Features Comparison

Fireworks AI

100+ Open-Source Models
Text, vision, audio, image, and embedding models, including recent releases such as Kimi K3, GLM 5.2, DeepSeek V4, MiniMax M3, and Qwen3.7 Plus
Blazing Fast Inference
Industry-leading throughput and latency with fast inference engine
Fine-Tuning Suite
SFT, DPO, and reinforcement fine-tuning of models up to 1T+ parameters, from guided runs through writing your own trainer and RL loop
OpenAI- and Anthropic-Compatible API
Drop-in replacement for closed-model APIs - change the base URL to migrate, with the same SFT data format for fine-tuning
On-Demand GPUs
H100, H200, B200, B300, and GB300 deployments with per-second billing and autoscaling
Batch Processing
Async bulk inference jobs run at scale for less than standard serverless requests

OpenAI

GPT Model Family
GPT-6 Astra for complex reasoning and coding, GPT-6 Sol to balance capability and cost, and GPT-6 Luna for cost-sensitive, high-volume workloads
Reasoning Models
Reasoning models for multi-step, complex tasks
Image Generation
Generate images as output with GPT Image 2
Realtime and Audio
Realtime API for voice applications plus endpoints to analyze, transcribe, and generate audio
Multimodal Capabilities
Process text, images, audio, and video inputs with unified models
Function Calling
Structured outputs and tool use for building agents and workflows

Pros & Cons

Fireworks AI

Advantages

Lightning-fast inference with industry-leading response times
Easy-to-use API with OpenAI and Anthropic compatibility
Wide variety of optimized open-source models
Discounted pricing for cached tokens and batch inference

Considerations

Limited capacity with some serverless model limits
Primarily focused on language models over image/video generation
BYOC only available for major enterprise customers

OpenAI

Advantages

Industry-leading model performance and accuracy
Extensive training data providing unmatched breadth across languages and domains
Developer-friendly SDKs for Python, JavaScript, and other languages
Comprehensive documentation and large community

Considerations

Higher cost compared to open-source alternatives
Token usage can scale quickly with conversation threads
Data privacy concerns for sensitive applications

Compute Services

Fireworks AI

OpenAI

Pricing Options

Fireworks AI

Serverless Inference

Pay-per-token pricing across Standard, Priority, and Fast serverless tiers with postpaid billing and no cold starts

Cached tokens

Cached input tokens billed at a reduced rate on supported models

Batch processing

Async bulk inference billed at a discount to standard serverless requests

Embeddings

Embedding models billed per 1M input tokens, tiered by model parameter count

Fine Tuning

Supervised and preference fine tuning billed per 1M training tokens with LoRA or full-parameter options; reinforcement fine tuning billed per GPU hour

Serverless Training API

Shared always-on trainer pool for LoRA training with no provisioning or idle cost, billed per token prefilled, sampled, and trained

On-demand GPUs

Per-second billing for H100, H200, B200, B300, and GB300 GPU deployments with no start-up charges; region-restricted deployments in the US or Europe are priced at 1.25x the standard rate

Reserved capacity

Guaranteed capacity with higher rate limits and earliest access to new hardware, arranged through sales

OpenAI

Pay-per-token

Charged based on tokens processed for both input and output

Batch API

50% discount for asynchronous batch processing

Prompt Caching

Discounts for recently seen input tokens

Getting Started

Fireworks AI

Get Started

1
Explore Model Library
Browse 100+ models at fireworks.ai/models
2
Test in Playground
Experiment with prompts interactively without coding
3
Generate API Key
Create an API key from user settings in your account
4
Make first API call
Use OpenAI-compatible endpoints or Fireworks SDK
5
Scale to production
Transition to on-demand GPU deployments for production workloads

OpenAI

Get Started

1
Create an account
Sign up at platform.openai.com
2
Generate API key
Create an API key in the dashboard and store it securely
3
Install SDK
Install the OpenAI SDK for Python, JavaScript, or your preferred language
4
Make your first call
Use the SDK to call OpenAI models for text generation or other tasks

Support & Global Availability

Fireworks AI

Global Regions

18+ global regions across 8 cloud providers with multi-region deployments and BYOC support for enterprise

Support

Documentation, Discord community, status page, email support, and dedicated enterprise support with SLAs

OpenAI

Global Regions

Global availability with data residency options in US, Europe, UK, Canada, Japan, South Korea, Singapore, India, Australia, and UAE

Support

Documentation, Help Center, Developer Forum, email support, and enterprise support plans with dedicated account managers