Head-to-head · Updated March 2026
GPT-4o Mini and Claude 4 Haiku are the two most popular budget AI APIs. GPT-4o Mini wins on price ($0.15 vs $0.80/1M input — 5× cheaper) and versatility. Claude 4 Haiku wins on writing quality — Anthropic's training advantage shows at every price tier. For bulk classification, extraction, or summarization pipelines where cost is the constraint, GPT-4o Mini is the stronger default. For automations where output quality is read by humans, Claude 4 Haiku is worth the modest premium.
GPT-4o Mini
OpenAI's fastest, cheapest option for everyday high-volume tasks.
WinnerClaude 4 Haiku
Best low-cost writing option for fast-moving content teams.
| GPT-4o Mini | Claude 4 Haiku | |
|---|---|---|
| Input cost / 1M tokens | $$0.15/1M | $$0.80/1M |
| Output cost / 1M tokens | $$0.60/1M | $$4.00/1M |
| Context window | 128k tokens | 200k tokens |
| Speed | Very fast | Very fast |
| Price tier | Budget | Budget |
Which model wins for each use case — and why.
GPT-4o Mini costs $0.15/1M input vs Claude 4 Haiku's $0.80/1M — 5× cheaper. At 1 billion tokens/month, GPT Mini saves $650.
Claude 4 Haiku produces more natural, tonally consistent writing. Anthropic's quality advantage is visible even at the budget tier.
GPT-4o Mini is very fast with excellent throughput for high-frequency pipelines. Both are fast, but Mini has the edge on raw speed.
Claude 4 Haiku handles light coding tasks slightly better, though neither is suitable for serious software development.
GPT-4o Mini benefits from OpenAI's mature API — better documentation, structured output support, and broader integrations.
Pick GPT-4o Mini if…
Pick Claude 4 Haiku if…
Bottom line
For most workflows, GPT-4o Mini is the stronger choice.
The go-to when you need OpenAI reliability at budget pricing for high-volume, lower-stakes tasks.
Is GPT-4o Mini or Claude Haiku better?
GPT-4o Mini is better on cost (5× cheaper) and versatility. Claude 4 Haiku is better on writing quality. Choose GPT Mini for volume/classification and Claude Haiku for writing-first automations.
How much cheaper is GPT-4o Mini than Claude Haiku?
GPT-4o Mini costs $0.15/1M input vs Claude 4 Haiku's $0.80/1M — 5× cheaper. Output is $0.60 vs $4/1M — about 7× cheaper. The cost difference is significant at scale.
Is there a better budget AI than both?
Gemini 3.1 Flash ($0.50/1M, 1M context window) and DeepSeek V3 ($0.27/1M) are often stronger budget picks. Compare all four before committing to one.
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