Secondary comparisonPrice Data Last Verified: April 22, 2026

GPT-4o vs Claude Sonnet 3.7: AI API Cost Comparison (2026)

GPT-4o 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 3.7 if you have a clear quality reason.

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

Standard request winner

GPT-4o

Saves about 31% versus the pricier option for the baseline request shape.

Scale winner

GPT-4o

Saves about 31% once usage becomes a recurring operating expense.

Default recommendation

GPT-4o

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

Option A

GPT-4o

OpenAI

Recommended default
OpenAI128K contextRecommended for productionReleased 2024-05
Input
$2.50
Output
$10.00
Context
128K

Best fit

  • Teams optimizing for lower blended cost per request.
  • Production rollouts that need a stronger reliability narrative.

Watch-outs

  • You may need to chunk prompts sooner on long-context workloads.

Option B

Claude Sonnet 3.7

Anthropic

Anthropic200K contextRecommended for productionReleased 2025-02
Input
$3.00
Output
$15.00
Context
200K

Best fit

  • Long-context workflows like document review or repo-scale analysis.
  • Production rollouts that need a stronger reliability narrative.

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 for lower-cost requests

GPT-4o 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 when usage multiplies

GPT-4o 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 3.7 if quality is the main constraint

Claude Sonnet 3.7 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 wins

GPT-4o

$2.50

Claude Sonnet 3.7

$3.00

Output cost / 1M

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

GPT-4o wins

GPT-4o

$10.00

Claude Sonnet 3.7

$15.00

Standard request total

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

GPT-4o wins

GPT-4o

$0.125

Claude Sonnet 3.7

$0.18

Context window

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

Claude Sonnet 3.7 wins

GPT-4o

128K

Claude Sonnet 3.7

200K

Scenario math

Standard request

10,000 input / 10,000 output tokens

GPT-4o

$0.125

$0.025 input + $0.10 output

Claude Sonnet 3.7

$0.18

$0.03 input + $0.15 output

High-volume scenario

2M input / 2M output tokens

GPT-4o

$25.00

Claude Sonnet 3.7

$36.00

At scale, the cheaper option saves roughly 31% 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