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Alternatives to OpenAI API

3 editor-selected alternatives · OpenAI API overview →

source: tools.alternatives · stored order · active records only; review scores are annotations and never change membership or order

A directional evidence panel appears only when the substitute rationale, trade-offs, sources, and verification date have been recorded. Older selections without that panel remain visible but are unclassified under the new evidence contract.

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1

Anthropic API

90/100explicit relation

Official API for Claude models including Opus, Sonnet, and Haiku. Supports tool use, computer use, extended thinking, and batch processing. Features prompt caching, streaming, and Messages API with vision capabilities. Known for strong performance on complex reasoning tasks, nuanced instruction following, and safety-conscious design that makes it trusted for enterprise and production applications.

Usage-based pay-as-you-go per 1M tokens. Claude 3.5 Sonnet ($3.00 input / $15.00 output), Claude 3.5 Haiku ($0.80-$1.00 input / $4.00-$5.00 output), and Claude 3 Opus ($15.00 input / $75.00 output). Features Prompt Caching (90% discount on cache reads: $0.30/1M for Sonnet 3.5) and Message Batches API (50% discount on async 24h workloads). Includes 200k context window, native Tool Use, Vision, and Computer Use API.Review →
Cohere logo
2

Cohere

freemiumexplicit relation

Enterprise-focused AI platform from former Google Brain researchers offering Command (chat), Embed (semantic search), and Rerank (result ordering) model families. Cohere Embed v4 supports 100+ languages with multimodal text/image inputs, North agent workspace processes documents and spreadsheets, and Model Vault enables secure VPC or on-premises deployment for regulated enterprises.

Cohere specializes in enterprise NLP, embeddings, and reranking. It offers a free Developer Trial tier with 1,000 calls/month for prototyping, pay-as-you-go production billing based on token consumption (Command/Embed) and query volume (Rerank), as well as custom Enterprise VPC deployments.
Azure OpenAI logo
3

Azure OpenAI

freemiumexplicit relation

Microsoft's enterprise gateway to OpenAI models — GPT-5-family models, reasoning variants, real-time/audio options, and Azure-hosted governance — with Azure security, compliance, and global infrastructure. Azure OpenAI is designed for teams that need OpenAI capability inside existing Microsoft cloud controls.

Enterprise OpenAI models on Microsoft Azure with $200 free trial credits. Standard consumption pricing: GPT-4o ($2.50 input / $10.00 output per 1M tokens), GPT-4o-mini ($0.15 input / $0.60 output per 1M tokens), and Prompt Caching discounts. Offers 50% off via Global Batch API and dedicated Provisioned Throughput Units (PTU) with enterprise VNet security and HIPAA compliance.

Free OpenAI API alternatives

Cohere, Azure OpenAI offer a free plan or free tier.

More Model Providers tools

same category, not editor-selected alternatives — see how OpenAI API compares →

ClaudeAnthropic's AI assistant known for strong reasoning, nuanced writing, and extended context up to 200K tokens. Available in Opus (most capable), Sonnet (balanced), and Haiku (fast) tiers. Features web search, deep research, file analysis, code execution, artifacts, and Projects for organized workflows. Claude Code provides terminal-based agentic coding. API supports tool use, batch processing, and prompt caching. Available via claude.ai, mobile apps, and developer API.CerebrasCerebras Inference serves open-weight LLMs like Llama, Qwen, and GPT-OSS on wafer-scale CS-3 chips through an OpenAI-compatible API, benchmarking between 1,800 and 2,600 output tokens per second on Llama 3.1 8B and several hundred on 70B models. A free tier offers one million tokens per day with no credit card, while paid pay-per-token pricing starts at $0.04 per million tokens for the smaller Llama models.ChatGPTChatGPT is OpenAI’s consumer and business assistant for everyday Q&A, writing, coding help, image tools, deep research, and workspace collaboration across web and apps. Plans span Free, Go, Plus, Pro, Business, and Enterprise on chatgpt.com.GroqGroq is an AI inference provider built around custom Language Processing Unit (LPU) hardware for low-latency open-weight model serving. GroqCloud exposes an OpenAI-compatible API for Llama, GPT-OSS, Qwen, Kimi, DeepSeek, Gemma, Whisper, and related models, with high token-throughput positioning, model-specific rate limits, and usage-based pricing.vLLMvLLM is an Apache-2.0 LLM inference and serving engine focused on high-throughput self-hosted model APIs. It combines PagedAttention, continuous batching, prefix caching, quantization options, OpenAI-compatible serving, structured outputs, metrics, Docker/Kubernetes deployment guidance and integrations with agent and LLM frameworks.DeepSeekChinese AI research lab developing low-cost reasoning and coding models with a fast-moving hosted API surface. Current API docs foreground DeepSeek V4 Flash and V4 Pro with thinking/non-thinking modes, OpenAI- and Anthropic-compatible endpoints, 1M context, JSON output, tool calls, and chat-prefix/FIM options. Free chat assistant and API access are available, while open-weight/self-hosting claims should be checked against current model repositories.Hugging FaceOpen-source platform for building, sharing, and deploying machine learning models and datasets. Hosts 500k+ models, 100k+ datasets, and Spaces for interactive demos. The central hub of the open-source AI ecosystem, providing model discovery, inference APIs, and collaborative tools that make it the GitHub of machine learning for researchers and developers worldwide.Together AITogether AI is a cloud platform for running, fine-tuning, batching, and training open-weight AI models. It supports serverless inference, dedicated endpoints, LoRA and full fine-tuning, GPU clusters, code-execution sandboxes, and async batch jobs up to 30B tokens per model. Current docs list fast-moving families such as Qwen, Kimi, GLM, GPT-OSS, DeepSeek, Llama, MiniMax, and Mistral.Mistral AIMistral AI is the French frontier-AI lab behind open-weight and commercial models, Mistral Vibe (formerly Le Chat), Studio, agentic coding, and the European-hosted Mistral Compute cloud. It gives developers an EU-centered alternative across API, assistant, agent-platform, and sovereign-infrastructure workflows, with model-specific licensing and pricing that should be checked per workload.

OpenAI API head-to-head

FAQ

Which OpenAI API alternative is listed first?

Anthropic API is first in the editor-selected list of 3 OpenAI API alternatives and carries an editorial review score of 90/100. The stored order is editorial; review scores do not determine membership or position.

Are there free OpenAI API alternatives?

Yes — Cohere, Azure OpenAI offer a free plan or free tier.