Model comparison · Updated 10 Oct 2026

Claude Sonnet 4 vs GPT-3.5 Turbo 16k

Q: Is Claude Sonnet 4 better than GPT-3.5 Turbo 16k?

We do not benchmark quality, so we cannot say. On the recorded numbers: Claude Sonnet 4 and GPT-3.5 Turbo 16k cost the same on input, $3.00 per 1M tokens. Claude Sonnet 4 has the larger context window (200K against 16K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $2,700 a month for Claude Sonnet 4 and $1,710 for GPT-3.5 Turbo 16k. Which is better for you depends on your task; test both on your own prompts.

Q: Which is cheaper, Claude Sonnet 4 or GPT-3.5 Turbo 16k?

They cost the same on input, $3.00 per 1M tokens. Output is $15.00 for Claude Sonnet 4 and $4.00 for GPT-3.5 Turbo 16k.

Q: How much does each cost per 1M tokens?

Claude Sonnet 4: $3.00 input and $15.00 output. GPT-3.5 Turbo 16k: $3.00 input and $4.00 output. Standard tier, USD.

Q: Which has the larger context window?

Claude Sonnet 4, with 200,000 tokens. GPT-3.5 Turbo 16k has 16,385 tokens.

Q: Do both offer batch pricing?

Neither lists a batch tier in our catalogue.

Q: Can both read images or audio?

Input types recorded for Claude Sonnet 4: none recorded. For GPT-3.5 Turbo 16k: none recorded. Where a record lists none we say so rather than guess; check each vendor's documentation before relying on a capability.

Q: Is either model open-weight?

Claude Sonnet 4: not marked open-weight in our records. GPT-3.5 Turbo 16k: not marked open-weight in our records.

Q: What would each cost for a support chatbot?

At 10,000 chats a day, 1,500 input and 300 output tokens each, 30 days, standard tier: about $2,700 a month for Claude Sonnet 4 and $1,710 for GPT-3.5 Turbo 16k. This is our calculation from the listed prices, not a quote.

Claude Sonnet 4 and GPT-3.5 Turbo 16k cost the same on input, $3.00 per 1M tokens. Claude Sonnet 4 has the larger context window (200K against 16K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $2,700 a month for Claude Sonnet 4 and $1,710 for GPT-3.5 Turbo 16k.

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Cite this page

ModelsAtlas. “Claude Sonnet 4 vs GPT-3.5 Turbo 16k”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/anthropic/claude-sonnet-4/vs/openai/gpt-3-5-turbo-16k

Model A

Claude Sonnet 4

by Anthropic · weights not marked open · GRIDF3

Input / 1M
$3.00
asserted Vendor states
Source
docs.anthropic.com/en/docs/about-claude/pricing
Retrieved
17 Aug 2026

Output / 1M$15.00

Context200K

Model B

GPT-3.5 Turbo 16k

by OpenAI · weights not marked open · GRIDF1

Input / 1M
$3.00
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026

Output / 1M$4.00

Context16K

Key numbers

Standard tier · highlighted = better

Claude Sonnet 4

GPT-3.5 Turbo 16k

Input / 1M tokens

$3.00

Output / 1M tokens

$15.00

$4.00

Batch input / output

Not listed

Context window

200,000

16,385

Input types

Not disclosed

Weights

Not marked open

Tiers listed

standard

Prices checked

2026-10-10

2026-08-17

What it costs for real workloads

Monthly, standard tier, 30 days

Support chatbot10k chats/day · 1.5k in, 300 out

$2,700/mo

$1,710/mo

RAG over documents2k queries/day · 12k in, 500 out

$2,610/mo

$2,280/mo

Coding agent300 tasks/day · 60k in, 8k out

$2,700/mo

$1,908/mo

Claude Sonnet 4 GPT-3.5 Turbo 16k · Derived from the standard-tier prices above, input and output tokens per request as stated, 30 days. Excludes caching discounts and batch. Try your own numbers.

On the atlas

Price band (A–H) × context band (1–6)

2 squares apart. GPT-3.5 Turbo 16k (F1) sits 2 context bands smaller than Claude Sonnet 4 (F3).

Same square as Claude Sonnet 4: Claude Opus 4.5 ($5.00). Open F3 · Open F1

Claude Sonnet 4GPT-3.5 Turbo 16kNearest neighboursOpen weights

View the map as a table (6 squares)

Square	Price band	Context band	Models
GRIDE1	$1–3	<32K	GPT-3.5 Turbo Instruct
GRIDE2	$1–3	32–128K	Command R+ (08-2024), GPT-4o, GPT Audio, Mixtral 8x22B Instruct
GRIDE3	$1–3	128–256K	Command A, Nano Banana Pro (Gemini 3 Pro Image), o3
GRIDF1	$3–10	<32K	GPT-3.5 Turbo 16k
GRIDF3	$3–10	128–256K	Claude Sonnet 4, Claude Opus 4.5
GRIDF4	$3–10	256K–1M	GPT Chat Latest, GPT-5.4 Image 2

Capabilities side by side

Only what our records list

Claude Sonnet 4

GPT-3.5 Turbo 16k

Vision input

Not disclosed

Audio input

Not disclosed

Open weights

Not marked open

Batch tier

Not listed

Free tier

Not listed

Thinking tier

Not listed

Neither record lists input types, so we do not claim any.

Which should you choose?

Editorial

Choose Claude Sonnet 4 if…

your prompts are long: it takes 200,000 tokens against 16,385

Choose GPT-3.5 Turbo 16k if…

output dominates your bill: $4.00 per 1M output against $15.00

Each reason is a fact from the tables above. Picking between them is our judgement, and we do not benchmark quality: price and context are what we can measure, so test both on your own prompts before you commit.

Questions

Is Claude Sonnet 4 better than GPT-3.5 Turbo 16k?

We do not benchmark quality, so we cannot say. On the recorded numbers: Claude Sonnet 4 and GPT-3.5 Turbo 16k cost the same on input, $3.00 per 1M tokens. Claude Sonnet 4 has the larger context window (200K against 16K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $2,700 a month for Claude Sonnet 4 and $1,710 for GPT-3.5 Turbo 16k. Which is better for you depends on your task; test both on your own prompts.

Which is cheaper, Claude Sonnet 4 or GPT-3.5 Turbo 16k?

They cost the same on input, $3.00 per 1M tokens. Output is $15.00 for Claude Sonnet 4 and $4.00 for GPT-3.5 Turbo 16k.

How much does each cost per 1M tokens?

Claude Sonnet 4: $3.00 input and $15.00 output. GPT-3.5 Turbo 16k: $3.00 input and $4.00 output. Standard tier, USD.

Which has the larger context window?

Claude Sonnet 4, with 200,000 tokens. GPT-3.5 Turbo 16k has 16,385 tokens.

Do both offer batch pricing?

Neither lists a batch tier in our catalogue.

Can both read images or audio?

Input types recorded for Claude Sonnet 4: none recorded. For GPT-3.5 Turbo 16k: none recorded. Where a record lists none we say so rather than guess; check each vendor's documentation before relying on a capability.

Is either model open-weight?

Claude Sonnet 4: not marked open-weight in our records. GPT-3.5 Turbo 16k: not marked open-weight in our records.

What would each cost for a support chatbot?

At 10,000 chats a day, 1,500 input and 300 output tokens each, 30 days, standard tier: about $2,700 a month for Claude Sonnet 4 and $1,710 for GPT-3.5 Turbo 16k. This is our calculation from the listed prices, not a quote.

About the two models

Claude Sonnet 4

By Anthropic. $3.00 input and $15.00 output per 1M tokens, 200K context, atlas square F3. Tiers listed: standard.

Full specs & pricing →

GPT-3.5 Turbo 16k

By OpenAI. $3.00 input and $4.00 output per 1M tokens, 16K context, atlas square F1. Tiers listed: standard.

Full specs & pricing →

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Is Claude Sonnet 4 better than GPT-3.5 Turbo 16k?
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