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Compteur et Analyseur de Jetons LLM IA

Estimez l'utilisation des jetons pour les LLM actuels comme GPT-5, Claude et Gemini.

Chain this with other tools→

Samples:

Paste your text

Drop in a prompt, draft, JSON payload, or code snippet.

Choose a model

Switch between current OpenAI, Claude, and Gemini families.

Compare token costs

See prompt size, context usage, and pricing side by side.

Trim the prompt

Use the counts to shorten prompts before you ship them.

Input

0 chars

Model

Loading tokenizer...

This tool gives you universal token analysis across major LLM providers. OpenAI counts run locally, Gemini counts can be verified with Google's countTokens API, and Claude exact counts are available when Anthropic credentials are configured.

The comparison table still updates instantly for every model so prompt sizing and cost planning stay fast while provider-backed exact counts load for the selected model.

OutputGPT-5: 0 tokens

Tokens

Exact count

Prompt Cost

$0.0000

Input-only cost for the selected model

Words

0 characters without spaces

Context Used

0.00%

400K token window

GPT-5

OpenAI · gpt-5

Universal tokenizer

Version

gpt-5-2025-08-07

Max Output

128K tokens

Cached Input

$0.125/1M

Output Cost

$10/1M

Compare API Pricing

Prices are per 1 million tokens. Current prompt costs are recalculated from this text for every model.

Model	Method	Context	Input / 1M	Cached / 1M	Output / 1M	Current Input Cost
GPT-5 OpenAI	Exact	400K	$1.25	$0.125	$10	$0.0000
GPT-5 mini OpenAI	Exact	400K	$0.25	$0.025	$2	$0.0000
GPT-5 nano OpenAI	Exact	400K	$0.05	$0.005	$0.4	$0.0000
GPT-4.1 OpenAI	Exact	1.0M	$2	$0.5	$8	$0.0000
GPT-4.1 mini OpenAI	Exact	1.0M	$0.4	$0.1	$1.6	$0.0000
GPT-4o OpenAI	Exact	128K	$2.5	$1.25	$10	$0.0000
GPT-4o mini OpenAI	Exact	128K	$0.15	$0.075	$0.6	$0.0000
o3 OpenAI	Exact	200K	$2	$0.5	$8	$0.0000
o4-mini OpenAI	Exact	200K	$1.1	$0.275	$4.4	$0.0000
Claude Opus 4.7 Anthropic	Estimated	1M	$5	$0.5	$25	$0.0000
Claude Sonnet 4.6 Anthropic	Estimated	1M	$3	$0.3	$15	$0.0000
Claude Haiku 4.5 Anthropic	Estimated	200K	$1	$0.1	$5	$0.0000
Gemini 2.5 Pro Google	Estimated	1.0M	$1.25	$0.125	$10	$0.0000
Gemini 2.5 Flash Google	Estimated	1.0M	$0.3	$0.03	$2.5	$0.0000
Gemini 2.5 Flash-Lite Google	Estimated	1.0M	$0.1	$0.01	$0.4	$0.0000

Input cost for GPT-5: $0.0000

Cached input cost: $0.0000

Matching output tokens would cost: $0.0000

Why token count matters

Token count controls prompt cost, response headroom, and whether a request fits inside the model's context window.

Universal token analysis

Use one tool to inspect current OpenAI, Claude, and Gemini families instead of maintaining separate token calculators for each provider.

Prompt optimization

Dense code, JSON, XML, and multilingual text usually consume more tokens than plain English prose. Trim boilerplate first.

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Compteur et Analyseur de Jetons LLM IA

How it Works

Collez votre prompt. L'outil utilise le tokenizer officiel (cl100k_base pour GPT-4) pour compter les tokens exacts et estimer le coût API.

Common Use Cases

Ingénierie de prompt pour respecter les limites de contexte.Estimation de budget avant traitement par lots.Comparaison de tokenisation entre modèles.Débogage d'erreurs 'Context Length Exceeded'.

Frequently Asked Questions

Everything you need to know about using this tool effectively and securely.

Q.Pourquoi les tokens diffèrent des mots ?

Les LLM lisent par morceaux (tokens). Un mot complexe peut faire 2 ou 3 tokens. En moyenne 1000 tokens ≈ 750 mots.

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