GPT-5.6 Sol
- Context
- 1,050,000
- Max output
- 128,000
- Input / MTok
- $4.00
- Cached / MTok
- $0.40
- Output / MTok
- $20.00
- Input types
- text + image
OPENAI UPGRADE PATH / VERIFIED 2026-10-04
GPT-5.6 Sol
vs GPT-6 Sol
Compare successive Sol generations on verified context, knowledge cutoff, reasoning controls and Standard API economics.
LIVE VERIFIED FACTS
Current facts from the SXF model database.
GPT-6 Sol
- Context
- 1,050,000
- Max output
- 128,000
- Input / MTok
- $2.00
- Cached / MTok
- $0.20
- Output / MTok
- $10.00
- Input types
- text + image
Facts are generated from the canonical model catalog, not copied into this comparison.Current data ↗Change ledger ↗
DECISION FACTORS
What materially changes the choice.
Context capacity
Both publish a 1,050,000-token context window.
Input modalities
Both list image, text as input types.
Direct token cost
For 100K uncached input + 10K output tokens, GPT-6 Sol is lower at $0.3 vs $0.6 (2.0× difference).
HOW TO DECIDE
Specifications narrow the field. Your workload decides.
Context, modalities and direct token economics are comparable from official sources. Coding quality, latency, reliability and agent success should be measured on your own acceptance tests before production routing.
Replay real tasks
Use representative prompts, files, tools and expected outputs from the workload you plan to ship.
Measure task cost
Include retries, cached tokens, long-context rules and tool charges—not only headline input price.
Track failures
Record hallucinations, tool errors, timeout behavior and human corrections alongside pass rate.
Route by task
A portfolio can outperform a one-model policy when different task classes have different cost and capability needs.
INDEPENDENT EVALUATIONS
No directly comparable independent result yet.
SXF does not infer quality from specifications or compare benchmark scores across different evaluator versions/configurations.
WHAT CHANGED
Changes affecting this comparison.
No post-baseline factual changes recorded for GPT-5.6 Sol, GPT-6 Sol since 2026-09-27.
VERIFIED BASELINE2026-09-27Current facts remain aligned with the SXF ledger.
QUICK ANSWERS
Which has the larger context window: GPT-5.6 Sol or GPT-6 Sol?
Both publish a 1,050,000-token context window.
Which is cheaper: GPT-5.6 Sol or GPT-6 Sol?
For 100K uncached input + 10K output tokens, GPT-6 Sol is lower at $0.3 vs $0.6 (2.0× difference).
Does SXF declare an overall winner?
No. This page compares source-backed specifications and economics. Quality, latency and task success require workload-specific evaluation evidence.