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Model comparison · Updated 10 Oct 2026

Claude Sonnet 4 vs o1

Claude Sonnet 4 is about 5× cheaper on input ($3.00 against $15.00 per 1M tokens) and on output. Both have a 200K-token context window. 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 $12,150 for o1.

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ModelsAtlas. “Claude Sonnet 4 vs o1”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/anthropic/claude-sonnet-4/vs/openai/o1

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
vs

Model B

o1

by OpenAI · weights not marked open · GRIDG3

Input / 1M
$15.00
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026
Output / 1M$60.00
Context200K

Key numbers

Standard tier · highlighted = better

Claude Sonnet 4
o1
Input / 1M tokens
$3.00
$15.00
Output / 1M tokens
$15.00
$60.00
Batch input / output
Not listed
Not listed
Context window
200,000
200,000
Input types
Not disclosed
Not disclosed
Weights
Not marked open
Not marked open
Tiers listed
standard
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
$12,150/mo
RAG over documents2k queries/day · 12k in, 500 out
$2,610/mo
$12,600/mo
Coding agent300 tasks/day · 60k in, 8k out
$2,700/mo
$12,420/mo

Claude Sonnet 4   o1 · 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)

1 square apart. o1 (G3) sits 1 price band dearer than Claude Sonnet 4 (F3).

Same square as Claude Sonnet 4: Claude Opus 4.5 ($5.00). Same square as o1: Claude Opus 4 ($15.00), Claude Opus 4.1 ($15.00). Open F3 · Open G3

AFreeB<$0.10C$0.10–0.30D$0.30–1E$1–3F$3–10G$10–30H$30+1<32K232–128K3128–256K4256K–1M51M6>1MINPUT PRICE PER 1M TOKENS →CONTEXT WINDOW ↑ · position within a square follows the real valueClaude Opus 4.5 · F3Command A · E3Nano Banana Pro (Gemini 3 Pro Image) · E3o3 · E3GPT Chat Latest · F4GPT-5.4 Image 2 · F4Claude Opus 4 · G3Claude Opus 4.1 · G3GPT-4 Turbo · G2GPT-5 Image · G4Claude Sonnet 4Claude Sonnet 4o1o1
Claude Sonnet 4o1Nearest neighboursOpen weights
View the map as a table (6 squares)
SquarePrice bandContext bandModels
GRIDE3$1–3128–256KCommand A, Nano Banana Pro (Gemini 3 Pro Image), o3
GRIDF3$3–10128–256KClaude Sonnet 4, Claude Opus 4.5
GRIDF4$3–10256K–1MGPT Chat Latest, GPT-5.4 Image 2
GRIDG2$10–3032–128KGPT-4 Turbo
GRIDG3$10–30128–256Ko1, Claude Opus 4, Claude Opus 4.1
GRIDG4$10–30256K–1MGPT-5 Image

Capabilities side by side

Only what our records list

Claude Sonnet 4
o1
Vision input
Not disclosed
Not disclosed
Audio input
Not disclosed
Not disclosed
Open weights
Not marked open
Not marked open
Batch tier
Not listed
Not listed
Free tier
Not listed
Not listed
Thinking tier
Not listed
Not listed

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

Which should you choose?

Editorial

Choose Claude Sonnet 4 if…

  • you pay by the token: it costs $3.00 per 1M input against $15.00
  • output dominates your bill: $15.00 per 1M output against $60.00

Choose o1 if…

Nothing in the recorded numbers favours o1 over Claude Sonnet 4. Pick it for what our records do not cover — your own tests, or an account you already have with OpenAI.

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 o1?
We do not benchmark quality, so we cannot say. On the recorded numbers: Claude Sonnet 4 is about 5× cheaper on input ($3.00 against $15.00 per 1M tokens) and on output. Both have a 200K-token context window. 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 $12,150 for o1. Which is better for you depends on your task; test both on your own prompts.
Which is cheaper, Claude Sonnet 4 or o1?
Claude Sonnet 4: $3.00 against $15.00 per 1M input tokens, and $15.00 against $60.00 per 1M output, on standard pricing.
How much does each cost per 1M tokens?
Claude Sonnet 4: $3.00 input and $15.00 output. o1: $15.00 input and $60.00 output. Standard tier, USD.
Which has the larger context window?
Neither: both have 200,000 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 o1: 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. o1: 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 $12,150 for o1. 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 →

o1

By OpenAI. $15.00 input and $60.00 output per 1M tokens, 200K context, atlas square G3. Tiers listed: standard.

Full specs & pricing →

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