Sol at the same list price with the Pro serving profile. 1.05M context, vision, file input; the rate doubles above 272K prompt tokens.
Modalities
Text+Image → Text
Below release
Not established
Weights
Not published
Where it sits in the catalogue Kyma measures
Every number against every text model Kyma prices per token — a stated rule, not a chosen line-up.
$2.70
output $13.50 · cached $0.3375
median $1.009 · best $0.0494
$13.50
per 1M tokens generated
median $3.528 · best $0.2164
92.7%
411 observations since 2026-08-01
median 93.2% · best 100.0%
54.6 tok/s
probe median, one fixed prompt
median 39.7 tok/s · best 324.4 tok/s
3.59 s
probe median, to a complete answer
median 2.54 s · best 0.86 s
1.05M
max output 128,000
published by OpenAI, not measured here
Tick above each rail is this model, below it the other 68. Dashed rule is the field median, solid is its best. Better is left; the axis stops at the 90th percentile, so a few models sit past its right edge.
Usage
How much this model is actually called here.
Rank
#46
of 98 active models
Tokens served
2.6M
all-time
Platform share
0.1%
of all tokens
Two clocks, and why they disagree
Kyma measures this model twice. Both are real; they answer different questions.
Probe · every 6h · 30 days
3.59s to answer
One fixed prompt, on a schedule, to every model. Comparable, because the model is the only thing that changes.
- Observations
- 411
- Answered by a substitute
- 2
Real traffic · last 7 days
3.37s to answer
Your requests, at the lengths clients actually send. Not comparable between models, but it is what running this one feels like.
- Requests
- 34
- Completed
- 100%
- p95
- 72.2 s
Caching, as realised · last 7 days
54.9% of input cached
The share of input that actually hit cache, so the effective rate below is what was charged, not a best case.
- Cached input
- 299.4K
- Fresh input
- 245.9K
- List input
- $2.70 /1M
- Effective input
- $1.402673 /1M
Production prompts here are shorter than the probe's. Use the probe figure to choose between models, the traffic figure to budget for your own.
Pricing
Pay per token. Cached input bills at this model’s own cached rate, listed below.
+ Estimate your workload− Estimate your workload
Estimated monthly cost
$322
$10.73 / day on GPT-5.6 Sol Pro
Same workload on:
Estimates use list pricing with cached input at this model's own cached rate. Actual bills depend on real token counts, and every response includes its exact cost.
How it compares
Against the peers people actually weigh it against.
| Spec | GPT-5.6 Sol Pro | GPT-5.6 Sol | GPT-6 Astra |
|---|---|---|---|
| Input /1M | $2.70 | $2.70 | $13.50 |
| Output /1M | $13.50 | $13.50 | $67.50 |
| Context | 1M | 1M | 1M |
| Tools | Yes | Yes | Yes |
| Reasoning | Yes | Yes | Yes |
| Throughput | 54.6 tok/s | 28.8 tok/s | Not measured |
Quick start
Up and running in under two minutes.
- 1
Create an API key
Sign up and grab a key from the dashboard. GPT-5.6 Sol Pro needs a top-up — the signup credit covers the free tier.
Get API key → - 2
Make your first request
Drop in your key and send a chat completion — fully OpenAI-compatible.
curl https://kymaapi.com/v1/chat/completions \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.6-sol-pro", "messages": [ {"role": "user", "content": "Explain prompt caching in one paragraph."} ] }' - 3
Stream responses
Add
"stream": trueto receive tokens as they arrive.curl https://kymaapi.com/v1/chat/completions \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "model": "gpt-5.6-sol-pro", "stream": true, "messages": [{"role": "user", "content": "Hello!"}] }'
FAQ
Common questions about this model.
What is the context window of GPT-5.6 Sol Pro?
How much does the GPT-5.6 Sol Pro API cost?
Does GPT-5.6 Sol Pro support function calling?
Are the weights for GPT-5.6 Sol Pro publicly available?
Is GPT-5.6 Sol Pro ever served below the precision its creator released it at?
How do I use GPT-5.6 Sol Pro?
More models by OpenAI
See all 12 →| Model | Context | Input | Output |
|---|---|---|---|
GPT-6 Astra | 1M | $13.50 | $67.50 |
GPT Transcribe | — | $0.006075 / min | |
GPT-5.6 Terra | 1M | $2.70 | $16.20 |
GPT-5.6 Luna | 1M | $0.27 | $1.62 |
GPT-5.6 Luna Pro | 1M | $0.27 | $1.62 |
GPT-5.6 Terra Pro | 1M | $2.70 | $16.20 |
GPT-5.6 Sol | 1M | $2.70 | $13.50 |
GPT Image 2 | — | $0.072 / image | |
