How much does GPT-4o cost per million tokens?

Q: How much does GPT-4o cost per million tokens?

GPT-4o costs $2.50 per million input tokens and $10.00 per million output. How that translates to per-call costs and how it compares to alternatives.

Updated 2026-05-31 · By Clinton Patrick · Methodology

The short answer

As of 2026-04-26, OpenAI charges:

$2.50 per 1,000,000 input tokens
$10.00 per 1,000,000 output tokens

Output is 4× the price of input. This is typical for OpenAI and Anthropic models, generation is more expensive than reading.

What that means in real money

For a typical chat exchange (1,000-token prompt, 200-token reply):

input:  1,000 / 1,000,000 × $2.50 = $0.0025
output:   200 / 1,000,000 × $10.00 = $0.002
total per call:                      $0.0045
total per 1 million calls:        $4,500

For a longer RAG-style query (10,000 input, 500 output):

input:  10,000 / 1,000,000 × $2.50 = $0.025
output:    500 / 1,000,000 × $10.00 = $0.005
total per call:                       $0.03
total per 1 million calls:          $30,000

The longer the input, the more dominant the input cost becomes, and the more your model choice matters for total spend.

Cheaper alternatives

If you're cost-sensitive, GPT-4o is mid-range:

Model	Input ($/M)	Output ($/M)	When to consider
GPT-4o mini	$0.15	$0.60	Most workloads, 17× cheaper, smaller quality gap than you'd expect
Gemini 2.5 Flash	$0.075	$0.30	Cheapest exact-tokenizer option, 1M context
Claude Haiku 4.5	$0.80	$4.00	When you want Claude's instruction-following at low cost
DeepSeek V3	$0.27	$1.10	Cheapest frontier-tier model (subject to compliance fit)

More expensive but stronger on hard prompts

Model	Input	Output	When to consider
Claude Sonnet 4.6	$3.00	$15.00	Better instruction-following on nuanced tasks
Claude Opus 4.8	$15.00	$75.00	Frontier reasoning, when output quality justifies the bill
Gemini 2.5 Pro	$1.25	$10.00	Long-context (2M tokens), multimodal

Get a live cost estimate

Paste your actual prompt into the counter. It will show exact token counts across every model and the per-call cost based on your expected output ratio.

Try this on every model

Claude Opus 4.8 $5.00/$25.00
Claude Opus 4.8 (Fast Mode) $10.00/$50.00
Claude Sonnet 4.6 $3.00/$15.00
Claude Haiku 4.5 $1.00/$5.00
GPT-5.5 $5.00/$30.00
GPT-5.5 Pro $30.00/$180.00
GPT-5.4 $2.50/$15.00
GPT-5.4 Mini $0.75/$4.50
GPT-5.4 Nano $0.20/$1.25
GPT-5.4 Pro $30.00/$180.00
GPT-5.3 $1.75/$14.00
GPT-5.2 $1.75/$14.00
GPT-5.2 Pro $21.00/$168.00
GPT-5.1 $1.25/$10.00
GPT-5 $1.25/$10.00
GPT-5 Mini $0.25/$2.00
GPT-5 Nano $0.05/$0.40
GPT-5 Pro $15.00/$120.00
GPT-4.1 $2.00/$8.00
GPT-4.1 Mini $0.40/$1.60
GPT-4.1 Nano $0.10/$0.40
o3 $2.00/$8.00
o3-mini $1.10/$4.40
o3-pro $20.00/$80.00
o4-mini $1.10/$4.40
GPT-4o $2.50/$10.00
GPT-4o mini $0.15/$0.60
GPT-4 Turbo $10.00/$30.00
Gemini 3.1 Pro $2.00/$12.00
Gemini 3 Flash $0.50/$3.00
Gemini 3.1 Flash-Lite $0.25/$1.50
Gemini 2.5 Pro $1.25/$10.00
Gemini 2.5 Flash $0.30/$2.50
Gemini 2.5 Flash-Lite $0.10/$0.40
Llama 3.3 70B $0.88/$0.88
Llama 3.1 405B $3.50/$3.50
Llama 3.1 70B $0.59/$0.79
Llama 3.1 8B $0.18/$0.18
Mistral Large $2.00/$6.00
DeepSeek V3 $0.27/$1.10
DeepSeek V3.1 $0.60/$1.70
DeepSeek R1 $3.00/$7.00
Qwen 2.5 72B $0.90/$0.90
Qwen 2.5 Coder 32B $0.80/$0.80
Qwen3 Coder 480B $2.00/$2.00
GLM-5.1 $1.40/$4.40

Try the live counter →