Secondary comparisonPrice Data Last Verified: April 22, 2026

GPT-4o mini vs Claude Sonnet 4: AI API Cost Comparison (2026)

GPT-4o mini is the safer default for most buyers here. It creates the cleaner cost story, and the savings gap is meaningful enough that you should only move to Claude Sonnet 4 if you have a clear quality reason.

Wins: Standard request costWins: High-volume spendWins: Context window

Standard request winner

GPT-4o mini

Saves about 96% versus the pricier option for the baseline request shape.

Scale winner

GPT-4o mini

Saves about 96% once usage becomes a recurring operating expense.

Default recommendation

GPT-4o mini

Best starting point for most buyers unless you already know you need the premium alternative.

Option A

GPT-4o mini

OpenAI

Recommended default
OpenAI128K contextBest for fast responsesReleased 2024-07
Input
$0.15
Output
$0.60
Context
128K

Best fit

  • Teams optimizing for lower blended cost per request.
  • Latency-sensitive product surfaces and user-facing experiences.

Watch-outs

  • You may need to chunk prompts sooner on long-context workloads.
  • Lower price and speed may come with weaker top-end reasoning depth.

Option B

Claude Sonnet 4

Anthropic

Anthropic200K contextBest for coding & developmentReleased 2025-05
Input
$3.00
Output
$15.00
Context
200K

Best fit

  • Long-context workflows like document review or repo-scale analysis.
  • Developer tooling, code generation, and technical workflows.

Watch-outs

  • Costs compound faster when traffic or output length scales up.

Decision scenarios

What we would choose for different teams

This reframes the comparison around real buying situations, not just benchmark curiosity.

Budget-first pick

Choose GPT-4o mini for lower-cost requests

GPT-4o mini wins the standard request scenario, so it is the safer default if you are still validating usage and want cheaper per-call economics.

Scale decision

Choose GPT-4o mini when usage multiplies

GPT-4o mini stays ahead in the high-volume scenario, which matters most once the workload becomes a real operating expense instead of a prototype line item.

Capability-first pick

Choose Claude Sonnet 4 if quality is the main constraint

Claude Sonnet 4 has the stronger capability signal across context, positioning, and premium model attributes. Pick it when reasoning depth or delivery quality matters more than raw token cost.

Decision matrix

Input cost / 1M

Lower is better if prompt volume is the main driver.

GPT-4o mini wins

GPT-4o mini

$0.15

Claude Sonnet 4

$3.00

Output cost / 1M

Lower is better for chat, generation, and verbose outputs.

GPT-4o mini wins

GPT-4o mini

$0.60

Claude Sonnet 4

$15.00

Standard request total

Based on 10,000 input and 10,000 output tokens.

GPT-4o mini wins

GPT-4o mini

$0.0075

Claude Sonnet 4

$0.18

Context window

Higher is better when you need fewer prompt-chunking compromises.

Claude Sonnet 4 wins

GPT-4o mini

128K

Claude Sonnet 4

200K

Scenario math

Standard request

10,000 input / 10,000 output tokens

GPT-4o mini

$0.0075

$0.0015 input + $0.006 output

Claude Sonnet 4

$0.18

$0.03 input + $0.15 output

High-volume scenario

2M input / 2M output tokens

GPT-4o mini

$1.50

Claude Sonnet 4

$36.00

At scale, the cheaper option saves roughly 96% if your workload shape stays similar.

About the methodology

Cost estimates are generated from published input and output token rates for each provider. We apply identical token scenarios to both models so the result reflects pricing differences first, then layer on context and product-positioning signals to make the page more decision-ready. This page should help you narrow the choice quickly, but final selection should still be validated against your own prompts, quality bar, and latency requirements.

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Go Deeper

Read the model-selection guides behind this comparison