Leaderboard · Compare · Claude 3.5 Haiku vs GPT-4o mini · Updated
Claude 3.5 Haiku vs GPT-4o mini
GPT-4o mini edges out Claude 3.5 Haiku on the composite (61.3 vs 56.2). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
At a glance
| Spec | Claude 3.5 Haiku | GPT-4o mini |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Released | 2024-11 | 2024-07 |
| Tier | fast / cheap | fast / cheap |
| License | Closed | Closed |
| Context window | 200k | 128k |
| $ in / out (per 1M) | $0.80 / $4.00 | $0.15 / $0.60 |
Benchmark scoreboard
Higher is better on every benchmark. Δ shows Claude 3.5 Haiku − GPT-4o mini.
| Benchmark | Claude 3.5 Haiku | GPT-4o mini | Δ |
|---|---|---|---|
| Chatbot Arena Elo | 1240 | 1273 | -33 |
| MMLU-Pro | 65.0 | 64.9 | +0.1 |
| GPQA Diamond | 41.6 | 40.2 | +1.4 |
| MATH | 69.4 | 70.2 | -0.8 |
| HumanEval | 88.1 | 87.2 | +0.9 |
| SWE-Bench Verified | 40.6 | N/A | — |
Numbers compiled from provider technical reports and Chatbot Arena snapshots — see methodology.
OpenRouter routes Claude 3.5 Haiku, GPT-4o mini, and 100+ other LLMs behind a single API key — pay-as-you-go, no monthly minimum, fallback if a provider is down. Try OpenRouter → (affiliate · supports this site)
Claude 3.5 Haiku vs GPT-4o mini: where each one wins
Claude 3.5 Haiku is stronger on
- MMLU-Pro
- GPQA
- HumanEval
GPT-4o mini is stronger on
- Arena
- MATH
Cost comparison
At 10M tokens/day (50/50 split), Claude 3.5 Haiku costs ~$24.00/day vs $3.75/day for GPT-4o mini — GPT-4o mini is the cheaper pick at this volume.
Verdict
GPT-4o mini edges out Claude 3.5 Haiku on the composite (61.3 vs 56.2). The gap is meaningful but not decisive — see the per-benchmark breakdown below.
If you can only pick one and your workload is unclear, route via OpenRouter and switch by request — same key, no lock-in.
Frequently asked questions
Which is better, Claude 3.5 Haiku or GPT-4o mini?
GPT-4o mini edges out Claude 3.5 Haiku on the composite (61.3 vs 56.2). The gap is meaningful but not decisive — see the per-benchmark breakdown below. Claude 3.5 Haiku wins on MMLU-Pro, GPQA, HumanEval; GPT-4o mini wins on Arena, MATH.
What does Claude 3.5 Haiku cost compared to GPT-4o mini?
At 10M tokens/day (50/50 split), Claude 3.5 Haiku costs ~$24.00/day vs $3.75/day for GPT-4o mini — GPT-4o mini is the cheaper pick at this volume.
What is the context window of Claude 3.5 Haiku vs GPT-4o mini?
Claude 3.5 Haiku: 200k tokens. GPT-4o mini: 128k tokens. Claude 3.5 Haiku has the larger window — useful for long-document RAG and full-codebase prompting.
Is Claude 3.5 Haiku or GPT-4o mini open source?
Claude 3.5 Haiku: closed / proprietary. GPT-4o mini: closed / proprietary.
Can I try Claude 3.5 Haiku and GPT-4o mini on the same API key?
Yes — OpenRouter routes both models behind a single key, so you can A/B test Claude 3.5 Haiku against GPT-4o mini without juggling provider accounts.
Model deep-dives: Claude 3.5 Haiku · GPT-4o mini · Full leaderboard
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