AI Tool Comparison
Comparing as AI Pair Programming & Terminal AgentsOpenAI API vs Codeium
Compare features, pricing, pros & cons, and user ratings to decide which AI tool is best for your needs.
OpenAI API
VS
Codeium
Verdict by Category
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Detailed Comparison
Feature
OpenAI API
Codeium
Pricing
PaidThe OpenAI API uses pay-as-you-go, per-token pricing that varies by model. GPT-5.6 Sol, built for complex reasoning and coding, costs $5.00 per 1M input tokens and $30.00 per 1M output tokens with a 1.05M context length. GPT-5.6 Terra, balancing intelligence and cost, costs $2.00 per 1M input tokens and $12.00 per 1M output tokens. GPT-5.6 Luna, designed for cost-sensitive, high-volume workloads, costs $0.20 per 1M input tokens and $1.20 per 1M output tokens. All three share a 1.05M context length and 128K max output tokens. Additional costs apply for fine-tuning, evals, and specialized tools like web search or file search depending on usage. New accounts must add billing details before making live API calls, and there is no free-tier token quota; enterprise organizations can contact sales for custom pricing, dedicated support, and advanced data residency and retention controls.
FreemiumCodeium launched with a genuinely free tier for individual developers — unlimited code completions, chat, and search across 70+ languages and 40+ IDEs with no time limit or credit cap. Enterprise plans (custom pricing) added on-premises deployment, SOC 2 compliance, SSO, and zero code retention.
After launching the Windsurf Editor in November 2024, the company introduced paid tiers: Free ($0) with unlimited Tab autocomplete and a light agent quota; Pro ($15/month, later raised to $20/month in March 2026) with full model access, standard refreshing agent quota, and Cascade; Teams ($30/user/month); and Enterprise ($60/user/month) with SSO, 1,000 prompt credits, and enhanced security.
Following Cognition AI's acquisition and the June 2026 rebrand to Devin Desktop, pricing is now managed under Cognition's Devin plan structure: Free ($0), Pro ($20/month), Max ($200/month), Teams ($80/month + $40/seat), and Enterprise (custom). The codeium.com/pricing URL now redirects to devin.ai/pricing.
Categories
AI Developer APIs & PlatformsAI Coding AssistantsLarge Language Models (LLMs)
AI Coding AssistantsAI Productivity ToolsAI Developer APIs & Platforms
Summary
Developer platform for GPT models, AI agents, and real-time voice
The free AI code completion and chat superpower — now Windsurf
OpenAI API Pros & Cons
Pros
- Access to frontier GPT-5.6 models spanning a full range of intelligence and cost tiers
- Comprehensive platform covering text, agents, voice, and multimodal use cases in one place
- Agents SDK and built-in tools simplify building production-grade autonomous agents
- Strong enterprise security posture, including SOC 2 Type 2 and HIPAA BAAs
- No training on API business data by default, with zero data retention available by request
- Extensive documentation, cookbook examples, and an active developer community
Cons
- Pay-as-you-go token costs can scale quickly for high-volume or long-context applications
- New accounts must add billing details before making API calls, with no ongoing free-tier quota
- Frontier reasoning models like GPT-5.6 Sol carry premium per-token pricing versus smaller models
- Enterprise features like dedicated support and advanced data residency require contacting sales
- Rate limits and model access can vary by usage tier, requiring spend history to unlock higher limits
Codeium Pros & Cons
Pros
- Genuinely unlimited free tier for individual developers — no credit limits or trial expiry
- Broadest IDE coverage of any AI coding tool with 40+ editor integrations at launch
- Rapid iteration: went from plugin to agentic IDE and $100M ARR in under 3 years
- Enterprise-grade security with on-prem/VPC deployment, SOC 2, and zero code retention options
- Cascade/Windsurf Editor introduced flow-aware multi-file agentic coding before competitors
- Backed by top-tier investors and reached $1.25B unicorn valuation in just 2 years
Cons
- Rebranded twice (Codeium → Windsurf → Devin Desktop) creating confusion and instability for users
- Original Codeium extension identity sunset — codeium.com now redirects to Devin/Cognition
- Pro pricing rose from $15 to $20/month in March 2026, removing its budget pricing edge over Cursor
- Cascade agent fully retired July 1, 2026 — replaced by Devin Local under new ownership
- Heavy agentic workflows require Pro plan; free tier agent quota is limited
- Brand owned by Cognition AI (Devin), not the original Codeium/Windsurf founding team