LLM·Dex
Newsletter

Claude 3.5 Haiku vs GPT-4o

A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.

Updated

Claude 3.5 Haiku specs · GPT-4o specs
Verdict by category
  • PriceClaude 3.5 Haiku

    Claude 3.5 Haiku is roughly 2.5× cheaper on output tokens ($4.00 vs $10.00 per 1M).

  • Context windowClaude 3.5 Haiku

    Claude 3.5 Haiku accepts 200K tokens vs 128K, 1.6× the room for long documents and codebases.

  • BenchmarksTie

    No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.

  • ModalitiesGPT-4o

    GPT-4o supports 3 modalities (text, vision, audio) vs 2 for Claude 3.5 Haiku.

  • OpennessTie

    Both are closed-weight, API-only.

On balance Claude 3.5 Haiku edges ahead, winning 2 of 5 categories against GPT-4o's 1. Claude 3.5 Haiku is roughly 2.5× cheaper on output tokens ($4.00 vs $10.00 per 1M). Claude 3.5 Haiku accepts 200K tokens vs 128K, 1.6× the room for long documents and codebases.

No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. They differ in modality coverage, Claude 3.5 Haiku handles text, vision while GPT-4o handles text, vision, audio, which can be the deciding factor before you even look at benchmarks. Both are closed-weight, API-only.

Claude 3.5 Haiku is the newer of the two, released 6 months after GPT-4o, which usually means a more recent knowledge cutoff and updated safety post-training. Claude 3.5 Haiku is usually picked for customer support and code completion workloads, while GPT-4o sees more deployments in chatbots and vision. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.

Side-by-side specs

SpecClaude 3.5 HaikuGPT-4o
ProviderAnthropicOpenAI
ReleasedNov 2024May 2024
Modalitiestext, visiontext, vision, audio
Context window200K tokens128K tokens
Max output,,
Input · 1M$0.80 / 1M tokens$2.50 / 1M tokens
Output · 1M$4.00 / 1M tokens$10.00 / 1M tokens
Knowledge cutoff,2023-10
Open weightsNoNo
API availableYesYes

Pricing at scale

What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.

  • Light usage, 100k in / 50k out per day$8.40 vs $22.50
  • Heavy usage, 1M in / 500k out per day$84.00 vs $225
  • RAG workload, 5M in / 200k out per day$144 vs $435

Light usage, 100k in / 50k out per day: $8.40 vs $22.50 per month, model A comes out ahead. Heavy usage, 1M in / 500k out per day: $84.00 vs $225 per month, model A comes out ahead. RAG workload, 5M in / 200k out per day: $144 vs $435 per month, model A comes out ahead.

Price calculator

Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.

  • Claude 3.5 Haiku$0.280
  • GPT-4o$0.750

Benchmarks compared

Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.

Claude 3.5 HaikuGPT-4o
  • MMLU,88.7
  • HumanEval,90.2
Pick Claude 3.5 Haiku if

Claude 3.5 Haiku fits when…

  • Fast
  • Cheap for Anthropic
  • Strong code at small size
  • Cost-sensitive workloads, 2.5× cheaper than GPT-4o on output tokens.
  • Long-context tasks, handles 200K tokens vs 128K for GPT-4o.
Pick GPT-4o if

GPT-4o fits when…

  • Native multimodal
  • Mature SDK and tooling
  • Multimodal needs covering audio.
Don't want either?

Consider Claude Opus 4.7

Anthropic's mid-2026 flagship, ahead on SWE-bench, agent reliability, and writing quality.

See Claude Opus 4.7 specsClaude 3.5 Haiku vs Claude Opus 4.7GPT-4o vs Claude Opus 4.7

Frequently asked

  • Is Claude 3.5 Haiku or GPT-4o cheaper?
    Claude 3.5 Haiku is cheaper at $4.00 / 1M tokens per million output tokens, vs $10.00 / 1M tokens for GPT-4o.
  • Which has the larger context window?
    Claude 3.5 Haiku accepts 200K tokens vs 128K for GPT-4o.
  • Is Claude 3.5 Haiku or GPT-4o better for coding?
    Both Claude 3.5 Haiku and GPT-4o are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.
  • Are either of these models open source?
    Neither model ships open weights, both are accessible only via their respective providers' APIs.
  • When were Claude 3.5 Haiku and GPT-4o released?
    Claude 3.5 Haiku was released by Anthropic on 2024-11-04. GPT-4o was released by OpenAI on 2024-05-13.
Friday digest

The week's AI launches, in your inbox.

One short email every Friday, new models, leaks, and quietly-shipped APIs you missed.