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Model comparison · Updated 10 Oct 2026

Mistral Large 3 2512 vs o3

Mistral Large 3 2512 and o3 cost the same on input, $2.00 per 1M tokens. Mistral Large 3 2512 has the larger context window (262K against 200K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $1,440 a month for Mistral Large 3 2512 and $1,620 for o3.

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ModelsAtlas. “Mistral Large 3 2512 vs o3”. Retrieved 10 Oct 2026. https://modelsatlas.com/compare/mistralai/mistral-large/vs/openai/o3

Model A

Mistral Large 3 2512

by Mistral AI · weights not marked open · GRIDE4

Input / 1M
$2.00
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026
Output / 1M$6.00
Context262K
vs

Model B

o3

by OpenAI · weights not marked open · GRIDE3

Input / 1M
$2.00
observed We measured
Source
Our catalogue
Retrieved
17 Aug 2026
Output / 1M$8.00
Context200K

Key numbers

Standard tier · highlighted = better

Mistral Large 3 2512
o3
Input / 1M tokens
$2.00
$2.00
Output / 1M tokens
$6.00
$8.00
Batch input / output
Not listed
$0.55 / $2.20
Context window
262,144
200,000
Input types
Not disclosed
Not disclosed
Weights
Not marked open
Not marked open
Tiers listed
standard
batch, 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
$1,440/mo
$1,620/mo
RAG over documents2k queries/day · 12k in, 500 out
$1,620/mo
$1,680/mo
Coding agent300 tasks/day · 60k in, 8k out
$1,512/mo
$1,656/mo

Mistral Large 3 2512   o3 · 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. o3 (E3) sits 1 context band smaller than Mistral Large 3 2512 (E4).

Same square as Mistral Large 3 2512: GPT-5 ($1.25), GPT-5.1 ($1.25), GPT-5.1-Codex ($1.25). Same square as o3: Claude Haiku 4.5 ($1.00), Grok Build 0.1 ($1.00), Nano Banana Pro (Gemini 3 Pro Image) ($2.00). Open E4 · Open E3

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 valueGrok 4.5 · E4Grok 4.6 · E4Grok 4.7 · E4GPT-5.2 · E4GPT-5.2-Codex · E4GPT-5.3-Codex · E4Nano Banana Pro (Gemini 3 Pro Image) · E3Command A · E3Claude Haiku 4.5 · E3Grok Build 0.1 · E3Mixtral 8x22B Instruct · E2Mistral Large 3 2512Mistral Large 3 2512o3o3
Mistral Large 3 2512o3Nearest neighboursOpen weights
View the map as a table (3 squares)
SquarePrice bandContext bandModels
GRIDE2$1–332–128KMixtral 8x22B Instruct
GRIDE3$1–3128–256Ko3, Nano Banana Pro (Gemini 3 Pro Image), Command A, Claude Haiku 4.5, Grok Build 0.1
GRIDE4$1–3256K–1MMistral Large 3 2512, Grok 4.5, Grok 4.6, Grok 4.7, GPT-5.2, GPT-5.2-Codex, GPT-5.3-Codex

Capabilities side by side

Only what our records list

Mistral Large 3 2512
o3
Vision input
Not disclosed
Not disclosed
Audio input
Not disclosed
Not disclosed
Open weights
Not marked open
Not marked open
Batch tier
Not listed
Supported
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 Mistral Large 3 2512 if…

  • output dominates your bill: $6.00 per 1M output against $8.00
  • your prompts are long: it takes 262,144 tokens against 200,000

Choose o3 if…

  • work can wait: it lists a batch tier and the other does not

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 Mistral Large 3 2512 better than o3?
We do not benchmark quality, so we cannot say. On the recorded numbers: Mistral Large 3 2512 and o3 cost the same on input, $2.00 per 1M tokens. Mistral Large 3 2512 has the larger context window (262K against 200K tokens). For a support chatbot at 10,000 chats a day, the standard-tier bill is about $1,440 a month for Mistral Large 3 2512 and $1,620 for o3. Which is better for you depends on your task; test both on your own prompts.
Which is cheaper, Mistral Large 3 2512 or o3?
They cost the same on input, $2.00 per 1M tokens. Output is $6.00 for Mistral Large 3 2512 and $8.00 for o3.
How much does each cost per 1M tokens?
Mistral Large 3 2512: $2.00 input and $6.00 output. o3: $2.00 input and $8.00 output. Standard tier, USD.
Which has the larger context window?
Mistral Large 3 2512, with 262,144 tokens. o3 has 200,000 tokens.
Do both offer batch pricing?
Mistral Large 3 2512 lists no batch tier. o3 lists a batch tier, at 50% of its standard price.
Can both read images or audio?
Input types recorded for Mistral Large 3 2512: none recorded. For o3: 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?
Mistral Large 3 2512: not marked open-weight in our records. o3: 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 $1,440 a month for Mistral Large 3 2512 and $1,620 for o3. This is our calculation from the listed prices, not a quote.

About the two models

Mistral Large 3 2512

By Mistral AI. $2.00 input and $6.00 output per 1M tokens, 262K context, atlas square E4. Tiers listed: standard.

Full specs & pricing →

o3

By OpenAI. $2.00 input and $8.00 output per 1M tokens, 200K context, atlas square E3. Tiers listed: batch, standard.

Full specs & pricing →

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