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GPT-3.5 Turbo

OpenAI

The model that started it all — and the cost floor everything is measured against.

GPT-3.5 Turbo is the baseline of this catalogue. It is genuinely cheap and genuinely fast, and for narrow classification it is still occasionally the right tool. For anything requiring judgement it is not competitive, and OpenAI has retired it from new deployments.

CapabilitiesTool useJSON mode

Variants

2 ways to run it.

Same family, different quality/cost rung. Picking the wrong one is the most common way teams overpay.

Turbo (16K)

Balanced
gpt-3.5-turbo-0125

Final and best 3.5 release.

rel. cost
34
quality

Instruct

Fast
gpt-3.5-turbo-instruct

Completion-style, not chat.

rel. cost
28
quality

Fit

Two audiences, one model.

The same model is a different proposition depending on what you point it at.

22/100

Recruitment fit

Do not screen candidates with this. Its judgement is not good enough to put in front of a hiring decision.

Best for

  • Nothing candidate-facing

Strengths

  • Very cheap
  • Very fast

Watch out for

  • 16K context cannot hold a full CV plus a job spec plus a rubric
  • Materially higher error rate on structured extraction

The numbers

Measured, not asserted.

Published benchmarks

Vendor and independent figures.

MMLU
70%Published

Compare

Worth putting side by side.