GPT/Flagship

GPT 5.6 Sol

GPT 5.6 Sol is GPT's most capable model, priced at $4.00/MTok input and $20.00/MTok output with a 1,050K context window.

Input $/MTok

$4.00

Output $/MTok

$20.00

Context window

1,050K

Cache read discount

90% off

GPT 5.6 Sol pricing breakdown

RateInput $/MTokOutput $/MTok
Standard$4.00$20.00
Cached read (90% off input)$0.40-
Cached write (25% surcharge)$5.00-
Batch (50% off)$2.00$10.00
Long context (≥272.001K tokens)$8.00$30.00

All rates in USD per million tokens. Prices verified against provider documentation.

GPT 5.6 Sol task benchmarks

Confidence scores (0-100) and cross-provider rank for each task type. Rank 1 is best across all 20 models.

TaskConfidenceRank
Code Generation94/100#1
Code Review92/100#2
Summarization90/100#2
Q&A91/100#1
Extraction88/100#3
Reasoning96/100#1
Classification86/100#3
Creative Writing92/100#2

GPT 5.6 Sol cost by use case

Estimated cost per API call using default token counts for each workload.

Use caseInput tokensOutput tokensCost / call
Code Generation2,0004,000$0.0880
Unit Test Generation3,0005,000$0.1120
SQL Generation1,5001,000$0.0260
API Generation3,0006,000$0.1320
Code Refactoring4,0004,000$0.0960
Code Review5,0002,000$0.0600
PR Review8,0003,000$0.0920
Security Review6,0002,500$0.0740
Bug Detection5,0002,000$0.0600
Document Summarization10,0001,000$0.0600
PDF Summarization15,0001,500$0.0900
Meeting Notes8,0002,000$0.0720

Monthly cost projections

Projected monthly spend at different call volumes, using code generation as a representative workload (2,000 input / 4,000 output tokens per call).

Calls / monthWithout cachingWith caching (90% read discount)
1K$88$82.96
10K$880$829.6
100K$8,800$8,296
500K$44,000$41,480
1M$88,000$82,960

Caching estimate assumes 70% of input tokens are cache reads. Your actual cache hit rate will depend on prompt structure and reuse.

Flagship alternatives to GPT 5.6 Sol

Same-tier models from other providers, sorted by input price.

ModelProviderInput $/MTokOutput $/MTokInput savings
Grok 4.6Grok$2.00$6.0050% cheaper
Grok 4.5Grok$2.00$6.0050% cheaper
Claude Opus 4.8Claude$5.00$25.0025% more
Claude Opus 5Claude$5.00$25.0025% more
Claude Fable 5.1Claude$10.00$50.00150% more
Claude Fable 5Claude$10.00$50.00150% more

GPT 5.6 Sol pricing history

Input decreased

$5.00 to $4.00/MTok

Aug 24, 2026

Output decreased

$30.00 to $20.00/MTok

Aug 24, 2026

Input launched

$5.00/MTok at launch

Jul 9, 2026

View full GPT 5.6 Sol pricing history

Track your GPT 5.6 Sol spend

See exactly how much you spend on GPT 5.6 Sol and where you can save. Two-line wrapper install, no API keys shared.