GPT · Flagship · 128K context window

GPT 5.5 pricing for unit test generation

$0.1650 per call at 3,000 input / 5,000 output tokens.

Per call

$0.1650

10K calls/mo

$1,650

Cache savings

90% off input

Batch savings

50% off all

Calculate your GPT 5.5 costs

Adjust token counts, volume, and discount toggles to model your unit test generation spend. Pricing updated weekly.

Configure your usage

3,000
100100K
5,000
5050K
10,000
1001M

Estimated cost

Monthly cost
$1,650
10,000 calls/month
Cost per call$0.165
Daily cost$55
Input rate$5.00/MTok
Output rate$30.00/MTok
Analyze your real spend

Quick start

Call GPT 5.5 with the OpenAI Python SDK:

from openai import OpenAI

client = OpenAI()
response = client.chat.completions.create(
    model="gpt-5.5",
    max_tokens=5000,
    messages=[{"role": "user", "content": "Your prompt here"}]
)
# Cost: ~$0.1650 per call at standard rates
# Input:  $5.00/MTok
# Output: $30.00/MTok

How GPT 5.5 compares on cost

Per-call cost for all models scoring 50+ on unit test generation benchmarks. Hover for details.

Cheapest viable option: Claude Sonnet 5 at $0.0560/call (66% less, 93/100 quality).

Complete GPT 5.5 pricing breakdown

Standard token rates

Direction$/MTokTokens per call
Input$5.003,000
Output$30.005,000

Prompt caching: 90% off input tokens

Caching drops input cost from $5.00 to $0.50/MTok. For repeated system prompts, that saves $0.0135 per call.

Batch API: 50% off all tokens

Submit requests asynchronously and receive 50% off all token costs. This works best for offline pipelines where latency requirements are flexible.

Monthly cost projections

Monthly volumeCost per callStandard monthlyCached monthlyYou save with caching
10,000 calls$0.1650$1,650$1,515$135
50,000 calls$0.1650$8,250$7,575$675
100,000 calls$0.1650$16,500$15,150$1,350
500,000 calls$0.1650$82,500$75,750$6,750
1,000,000 calls$0.1650$165,000$151,500$13,500

GPT 5.5 quality benchmarks for unit test generation

Use GPT 5.5 for unit test generation

Scores 91/100 (rank #3 of 14). Strong pick for production unit test generation workloads.

Top-ranked: Claude Fable 5 (96/100) at $0.2800/call

Performance across all task types

GPT 5.5 scores by task type. Unit Test Generation highlighted.

Reasoning95Code Generation *91Creative Writing91Code Review90Q&A90Summarization89Extraction87Classification85
Task typeConfidence scoreRank out of 14
Reasoning95/100#2
Code Generation(current page)91/100#3
Creative Writing91/100#2
Code Review90/100#3
Q&A90/100#2
Summarization89/100#3
Extraction87/100#4
Classification85/100#3

Alternative models for unit test generation

8 models score 80+ on unit test generation benchmarks, sorted by input rate. Cheapest: Claude Sonnet 5 (66% less, 93/100 quality).

ModelProviderInput $/MTokOutput $/MTokQualityPer callvs GPT
Claude Sonnet 5Claude$2.00$10.0093/100$0.056066% cheaper
Gemini 3.1 ProGemini$2.00$12.0086/100$0.066060% cheaper
GPT 5.4GPT$2.50$15.0084/100$0.082550% cheaper
GPT 5.6 TerraGPT$2.50$15.0086/100$0.082550% cheaper
Claude Sonnet 4.6Claude$3.00$15.0092/100$0.084049% cheaper
Claude Opus 4.8Claude$5.00$25.0095/100$0.140015% cheaper
GPT 5.6 SolGPT$5.00$30.0094/100$0.1650same cost
Claude Fable 5Claude$10.00$50.0096/100$0.280070% more

About GPT 5.5

Provider

GPT

Tier

Flagship

Context

128K tokens

Released

Mar 2026

Other models from GPT

ModelTierInput $/MTokOutput $/MTokContext
GPT 5.4Mid-tier$2.50$15.00128K
GPT 5.6 SolFlagship$5.00$30.001,000K
GPT 5.6 TerraMid-tier$2.50$15.001,000K
GPT 5.6 LunaFast / Budget$1.00$6.001,000K

You can compare GPT 5.5 head-to-head against any other model on our model comparison pages, or track how pricing has changed over time on the pricing history tracker.

Frequently asked questions

How much does GPT 5.5 cost for unit test generation per API call?

$0.1650 per call at 3,000 input / 5,000 output tokens.

Is GPT 5.5 the best model for unit test generation?

Scores 91/100, rank #3 of 14 models. Top-ranked: Claude Fable 5 at 96/100.

What is the cheapest model for unit test generation with good quality?

Claude Sonnet 5 scores 93/100 quality at $2.00/$10.00 per MTok. That is 66% less than GPT 5.5 per call.

How can I reduce my GPT 5.5 costs for unit test generation?

Three strategies: prompt caching (90% off input), batch API (50% off all tokens), prompt optimization. Combined: $0.1650 drops to about $0.008250 per call.

How does GPT 5.5 pricing compare to other GPT models?

GPT also offers: GPT 5.4 at $2.50/$15.00, GPT 5.6 Sol at $5.00/$30.00, GPT 5.6 Terra at $2.50/$15.00, GPT 5.6 Luna at $1.00/$6.00.

What context window does GPT 5.5 support?

128K tokens total. Typical unit test generation calls use 3,000 plus 5,000 tokens, well within limits.

Track what you spend on AI

This calculator estimates costs based on published rates only. Connect your API usage to see where your money goes and which models drive your spend.