expectedOpenAIExpected: Q2 2026

OpenAI o4 API

Next generation of OpenAI's dedicated reasoning models. Expected to beat o3 on math olympiad and coding benchmarks by a large margin.

What we know

Next generation of OpenAI's dedicated reasoning models. Expected to beat o3 on math olympiad and coding benchmarks by a large margin.

Why it matters: Reasoning-model benchmarks drive heavy developer search — "o4 api" is a known upcoming spike.

Expected pricing: ~$15 / $60 per 1M tokens

Current best equivalent

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GPT-5.4

GPT-5.4 subsumes the o-series reasoning stack and is the current best OpenAI reasoning model via API.

Use GPT-5.4 Now →Get API Key

We'll auto-switch your API calls to OpenAI o4 the moment it launches — no code changes required.

Call it with curl

curl -X POST https://api.skillboss.co/v1/run \
  -H "Authorization: Bearer $SKILLBOSS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "skill_id": "openai/gpt-5.4",
    "input": {
      "prompt": "Say hello from OpenAI o4 — routed via SkillBoss"
    }
  }'

Alternate options

ModelSkill IDTradeoff
DeepSeek R1deepseek/deepseek-r1Open-weight reasoning alternative, much cheaper

Notify me when OpenAI o4 launches

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Disclaimer: SkillBoss is an independent multi-provider gateway and is not affiliated with, endorsed by, or sponsored by OpenAI. “OpenAI o4”, “OpenAI”, and all related product names, logos, and trademarks are the property of their respective owners and are referenced here solely for factual comparison purposes. Information on this page is based on public roadmaps, leaks, and industry signals — not an official commitment from OpenAI. Actual release dates, names, features, and pricing may differ. See our full IP / trademark policy.