OpenAI API vs Claude Code
Frontier models: GPT-5, o-series reasoning, image, audio, embeddings
vs. Anthropic's terminal-native coding agent — built for deep codebase work
Pricing tiers
OpenAI API
Free Tier (Trial)
$5 free credit for new accounts. Rate-limited.
Free
Pay-as-you-go
No monthly min. Per-token pricing by model.
$0 base (usage-based)
Usage Tiers (1-5)
Automatic tier promotion based on cumulative spend. Higher tiers = higher rate limits + new model access.
$0 base (usage-based)
Enterprise
Custom. Priority access, SLA, dedicated capacity.
Custom
Claude Code
API (pay-per-token)
Pay-per-token via Anthropic API. Sonnet: $3/$15 per 1M in/out. Opus: $15/$75. Best for heavy/team use.
$0 base (usage-based)
Claude Pro
$20/mo. Includes limited Claude Code usage via subscription (Sonnet). Heaviest users will hit caps.
$20/mo
Claude Team
$30/user/mo. Shared workspace, admin controls, priority support.
$30/mo
Claude Max
$200/mo. Higher Claude Code quotas + priority access to Opus.
$200/mo
Enterprise
Custom. SSO, audit logs, SOC 2, dedicated support, HIPAA-eligible.
Custom
Free-tier quotas head-to-head
Comparing free-tier on OpenAI API vs api-pay-per-use on Claude Code.
| Metric | OpenAI API | Claude Code |
|---|---|---|
| No overlapping quota metrics for these tiers. | ||
Features
OpenAI API · 12 features
- Assistants API — Stateful assistants with tools, threads, file search.
- Batch API — 50% discount for async processing within 24h.
- Chat Completions API — Classic /v1/chat/completions endpoint.
- Files API — Upload docs for retrieval, fine-tuning, batch.
- Fine-Tuning — Supervised + DPO fine-tuning for GPT-4o, GPT-4.1, GPT-4o-mini.
- Function Calling — JSON-schema tool calling; parallel calls supported.
- Moderation — Safety classifier API (free).
- Prompt Caching — Auto-cache repeated prefixes; 50% cheaper cached hits.
- Realtime API — WebSocket streaming voice + text with low latency.
- Responses API — Stateful conversational API.
- Structured Outputs — Enforced JSON schema compliance.
- Vision — Image input for GPT models.
Claude Code · 16 features
- Background Tasks — Long-running processes.
- Claude Agent SDK — Build custom agents on same primitives.
- claude CLI — Terminal command.
- Git Worktrees — Isolated worktree per session.
- Hooks — Lifecycle shell commands.
- IDE Extensions — VS Code + JetBrains + Zed.
- MCP Client — Connect any MCP server.
- Memory (CLAUDE.md) — Persistent per-project instructions.
- Native Tools — Bash, Read, Write, Edit, Grep, Glob, WebFetch.
- Plan Mode — Dry-run — Claude shows plan without executing.
- Prompt Caching — 90% discount on repeated context.
- Sandbox Modes — Safe execution of risky commands.
- Slash Commands — User-defined workflows.
- Task Tool (subagents) — Spawn parallel Claude subagents.
- TodoWrite Tool — Internal task tracking.
- WebSearch + WebFetch — Live internet access.
Developer interfaces
| Kind | OpenAI API | Claude Code |
|---|---|---|
| CLI | — | claude CLI |
| SDK | openai-dotnet, openai-go, openai-node, openai-python | Claude Agent SDK |
| REST | OpenAI REST API | — |
| MCP | OpenAI MCP | MCP Client (built-in) |
| OTHER | Realtime API (WebSocket) | Claude Code Web, GitHub/PR Bridge, Hooks System, JetBrains Plugin, Slash Commands, VS Code Extension |
Staxly is an independent catalog of developer platforms. Some links to OpenAI API and Claude Code may be affiliate links — Staxly may earn a commission if you sign up through them, at no extra cost to you. Pricing is verified against vendor pages at publication time — reconfirm before buying.
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