Claude Opus 5.5 vs GPT-3.5 Turbo (older v0613)

Price, context window & benchmark comparison

A

Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
VS
O

GPT-3.5 Turbo (older v0613)

OpenAI
$1.00 / $2.00
Input / Output · per 1M tokens
Compare different models
A
O
Verdict: GPT-3.5 Turbo (older v0613) is 6.4× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 has the larger context window (1M vs 4K).
Claude Opus 5.5GPT-3.5 Turbo (older v0613)
Input price / 1M$4.00$1.00
Output price / 1M$20.00$2.00
Blended price (3:1)$8.00$1.25
Cached input / 1M$0.20
Context window1M4K
Max output128K4K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputYesNo
ReasoningYesNo
Tool callingYesYes
Released2026-09-222024-01-25
Retirement

Cost calculator

FAQ

Which is cheaper, Claude Opus 5.5 or GPT-3.5 Turbo (older v0613)?

GPT-3.5 Turbo (older v0613) is 6.4× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Claude Opus 5.5 vs GPT-3.5 Turbo (older v0613): which has a bigger context window?

Claude Opus 5.5: 1,000,000 tokens. GPT-3.5 Turbo (older v0613): 4,095 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Opus 5.5 ≈ $18,000, GPT-3.5 Turbo (older v0613) ≈ $3,000.

More comparisons