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gpt-5.6-solOpenAI

from /1M in$2.50openai inc.
context1.1M128K out
best ttft528msopenai inc.
price spread1.8x9 endpoints
endpoints
9
regions
8
best tok/s
47
api
chat
released
July 2026
eu routing
available

capabilities 5/8

visionreasoningtoolscachingweb searchjson schemacomputer useimage gen

The same weights cost 1.8x more on microsoft azure ai than on openai inc.. That is what the endpoints table is for.

endpoints

9 / 8 regions
Providers serving gpt-5.6-sol, with pricing and measured performance. Best value in each column is coloured.
#flags
1OpenAI Inc.Global1.1M$2.50$15.00$0.25528ms47.0no-train
2OpenAI Inc.Global1.1M$4.00$20.00$0.40528ms47.0no-train
3Microsoft Azure AIeastus21.1M$4.00$20.00$0.401.05s38.0zdr
4Microsoft Azure AIfrancecentral1.1M$4.40$22.00$0.441.05s38.0zdr
5Microsoft Azure AIgermanywestcentral1.1M$4.40$22.00$0.441.05s38.0zdr
6Microsoft Azure AIswedencentral1.1M$4.40$22.00$0.441.05s38.0zdr
7Microsoft Azure AIwesteurope1.1M$4.40$22.00$0.441.05s38.0zdr
8AWS Bedrockus-east-11.1M$4.40$22.00$0.44847ms32.0zdr
9AWS Bedrockus-east-21.1M$4.40$22.00$0.44847ms32.0zdr
provider price, no markupper 1M tokensblank where no qualifying sample

measured

through Sep 12
median
564ms1.40s2.23s07-0608-0309-071.61s1.15s742ms
hover the plot for weekly values
time to first token per provider: current value, window low and high, and change across the window
providernowlowhighchange
OpenAI Inc.528ms703ms2.04s-33%
AWS Bedrock847ms1.59s2.09s-23%
Microsoft Azure AI1.05s710ms1.45s-43%

median wait before the first token lands. this is the number a user feels, and it moves with provider load through the day.

Lines are steps: each sample is one week of traffic held flat, not a slide from the week before. Click a name in the key to drop it from the plot. Measured through Sep 12.

benchmarks

artificial analysis
Benchmark scores, each normalised to 100
evalScore as a share of 100/100
GPQA Diamond94.1
τ²-Bench85.1
Coding Index77.4
Terminal-Bench Hard65.9
SciCode57.1
Humanity's Last Exam49.5
Intelligence Index47.1
7 evalsmean68.0

Scores from Artificial Analysis and public leaderboards, normalised to 100. Bar colour is the band, not the rank: green 80 and up, blue 55 and up, amber 30 and up. Benchmarks measure narrow skills, so test on your own workload before committing. Released 2026-07-09.

call it

model=
gpt-5.6-sol

requesty routes this id across every provider serving gpt-5.6-sol, picking on price and health and failing over automatically. the id stays valid when a provider changes underneath it

Base url is https://router.requesty.ai/v1 for every id here. One key reaches the whole catalog.

quickstart

openai compatible
main.py
from openai import OpenAI client = OpenAI(    api_key="YOUR_REQUESTY_API_KEY",    base_url="https://router.requesty.ai/v1",) response = client.chat.completions.create(    model="gpt-5.6-sol",    messages=[        {"role": "user", "content": "Explain quantum computing in one paragraph."},    ],) print(response.choices[0].message.content)

Change the base url, use your Requesty key, set the model to any id in the call pane. Existing OpenAI SDK code needs no other edit, and the same key reaches every other model in the catalog, so switching later is a one-parameter change. Browse all models

notes

reference

GPT-5.6 Sol is OpenAI's most capable frontier model, delivering state of the art reasoning and agentic performance across coding, cybersecurity, and scientific research. It features a 1M+ token context window with support for text and image inputs, server side tool calling, and prompt caching, and is designed for the hardest multi step reasoning and long horizon agent workflows.

questions 7

Which providers serve gpt-5.6-sol?
gpt-5.6-sol is available from 3 providers through Requesty: OpenAI Inc., Microsoft Azure AI, AWS Bedrock. All endpoints share one OpenAI-compatible API and one key, and Requesty fails over between them automatically.
How much does gpt-5.6-sol cost?
Pricing starts at $2.50 per million input tokens and $15.00 per million output tokens on the cheapest provider. Prices vary by provider and region; the table above shows every endpoint. Requesty charges exactly what the upstream provider charges, with no markup.
Is gpt-5.6-sol open weights?
No. gpt-5.6-sol is a proprietary model from OpenAI, served through OpenAI's own API and licensed cloud platforms.
What is the context window of gpt-5.6-sol?
gpt-5.6-sol supports up to 1.1M tokens of context, with up to 128K output tokens per response. Some providers expose a smaller window; check the per-endpoint context column above.
Which provider is fastest for gpt-5.6-sol?
In recent production traffic through Requesty, OpenAI Inc. had the lowest median time to first token (528ms) for gpt-5.6-sol. Latency shifts over time, so Requesty's latency-based routing picks the fastest healthy provider per request automatically.
How do I use gpt-5.6-sol with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "gpt-5.6-sol" or any endpoint id from the table above. The quickstart section shows Python, JavaScript and cURL snippets.
Should I call gpt-5.6-sol by its managed id or a provider id?
Use the managed id, "gpt-5.6-sol". Requesty picks which of the 3 providers serves each request based on price and health, and fails over when one degrades, so the id keeps working while the routing changes underneath it. There is also an EU-only id, "gpt-5.6-sol@eu", which routes the same way but only through EU-hosted providers. Send a provider id like "openai/gpt-5.6-sol:flex" only when you need one specific deployment and want no failover.

more from openai 6

Other OpenAI models
modelcontextfrom /Mproviders
gpt-6-astra1.1M$5.002
gpt-5.6-luna1.1M$0.103
gpt-5.6-terra1.1M$1.003
gpt-5.5-pro1.1M$30.001
gpt-5.51.1M$2.503
gpt-5.4-nano400K$0.101

route gpt-5.6-sol through one endpoint

One key for 3 providers on this model and 600+ others. No markup on provider prices, automatic failover, caching built in. Weekly aggregates in the measured pane come from production traffic routed through Requesty, one line per provider on a shared axis. Methodology

gpt-5.6-sol3 providers9 endpointsfrom $2.50 /1M inctx 1.1Mttft 528msspread 1.8xupdated Sep 12