Engineering01
Ship features
Plan and write changes across a repo, then chase the failing tests to green.
Public preview — live·GPT-6 · preview
A frontier model,
wired to your browser.
ChatGPT-6 is a frontier GPT-class model built for real engineering — deep reasoning, whole-repo coding, long-running agents and vision. No install, no account. Open the console and it answers in seconds.
No signup · No app · No card
400K
token context
99.9%
uptime
$0
to run
chatgpt6.ai — sessionlive
Refactor this module and add tests.
On it — here's a tighter version with a small helper and unit tests:
def greet(name):
return f"Hi, {name}!"
return f"Hi, {name}!"
›Message ChatGPT-6…
Reasoning+Multi-file coding+Agents+400K context+Vision+Tool calls+Structured output+Multilingual+Reasoning+Multi-file coding+Agents+400K context+Vision+Tool calls+Structured output+Multilingual+
◇01Capabilities
One model, every layer of the stack
Built for work that actually ships.
ChatGPT-6 pairs frontier reasoning with a deep context window and native tool use — the same engine behind serious coding and autonomous agents.
C.01
Deep reasoning
Structured, step-by-step thinking for math, logic and multi-constraint problems that break smaller models.
C.02
Whole-repo coding
Reads across a codebase, plans edits over many files, and keeps iterating until the tests pass.
C.03
Autonomous agents
Runs sustained, multi-step tasks with tool calls and dependable execution — not just single turns.
C.04
400K context
Load entire files, docs and threads at once and keep the whole picture in working memory.
C.05
Vision
Reads screenshots, diagrams, charts and photos inline, right alongside your prompt.
C.06
Structured output
Schema-constrained JSON you can drop straight into a production pipeline.
◇02Use cases
What people point it at
From a one-line question to a full engineering run.
Research02
Go deep
Reason over long documents and return clear, sourced synthesis.
Agents03
Automate
Drive multi-step tool workflows that run all the way to done.
Data04
Make it structured
Turn messy input into clean, typed, actionable output.
Writing05
Draft & edit
Long-form writing that holds a consistent, context-aware voice.
Vision06
Read the screen
Explain screenshots, diagrams and UI mockups in context.
◇03Performance
Instruments, not adjectives
Frontier quality, streaming live.
Every response streams straight from a dedicated provider — no queue, no routing roulette, healthy failover.
01
400K
Context window
tokens in a single session
02
58 tps
Throughput
median tokens per second
03
1.9s
Latency
median time to first token
04
99.9%
Uptime
monitored continuously
◇04Comparison
Where it lands
Frontier class. Zero list price.
How ChatGPT-6 lines up against today's leading models on the axes that matter — with one column nobody else can print.
| Model | Context | Intelligence | Vision | Tools & agents | Price / 1M | Free |
|---|---|---|---|---|---|---|
ChatGPT-6this build | 400K | 71* | $0 | |||
GPT-5.6 Sol | 400K | 67 | $10 | |||
Claude Opus 5 | 1M | 68 | $25 | |||
Gemini 3.7 Pro | 2M | 66 | $10 | |||
Grok 4.6 | 500K | 65 | $6 | |||
Llama 4.2 405B | 256K | 60 | $3.50 |
Indicative figures from public benchmarks (Artificial Analysis Intelligence Index, agentic-coding evals) as of September 2026. ChatGPT-6 is an early-access preview — its score (*) is a community-reported estimate. Competitor prices are per 1M output tokens; Intelligence is the Artificial Analysis Intelligence Index.
◇05In the field
Tuned for heavy workloads
The shape of work it handles.
ChatGPT-6 is built for high-volume, high-stakes tasks — a good read on what it'll do for you.
01multi-step
Autonomous agents
Agents with memory, tools and browser control that run to completion.
02repo-scale
Coding assistants
Tools that read your repo and execute edits across files.
03400K ctx
Research copilots
Long-context synthesis over large document sets.
04typed JSON
Production pipelines
Structured, schema-locked output at scale.
◇06Pricing
The whole price list
Free. No asterisk.
During the public preview every message to ChatGPT-6 is free — no card, no meter to watch.
Free
activeEverything, right now
$0/mo
- Unlimited messages
- Full 400K token context
- Reasoning, coding & vision
- No signup, no app
- Markdown & code rendering
Pro
For teams — on the roadmap
Soon
- Everything in Free
- Priority throughput
- API access
- Team workspaces
- Usage analytics
◇07Everywhere
Runs in the browser. Nothing to install.
No download, no extension. Open the console on any device and start.
Web
Mobile web
API (soon)
◇08Signal
Early telemetry
What early users report.
“Handed it a nasty refactor across a dozen files and it just… landed it. Free is unreal.”
A
Alex
@alex_dev · Sep 1
“The long context is the real deal — dropped a whole spec in and it kept every thread straight.”
M
Marina
@marina_ml · Sep 1
“Fast enough for agent loops, and it costs nothing. It's my default now.”
K
Ken
@kenbuilds · Sep 2
“Reasoning quality is a clear step up. No login — opened it and went.”
S
Sofia
@sofia_writes · Sep 2
◇09Reference
Questions, answered.
ChatGPT-6 is a frontier GPT-class model built for deep reasoning, coding and agentic work, with a large context window and multimodal (text + vision) input. chatgpt6.ai is a free, no-login console for it.
Yes. During the public preview every message is free — no card and no signup to start.
No. ChatGPT-6 runs in your browser. Open the console and type.
Up to 400,000 tokens in a single session — enough for large files, long documents and extended threads.
Yes. ChatGPT-6 is strong at multi-file coding, tool calls and schema-locked structured output — which is why it fits agents and production pipelines.
ChatGPT-6 is multilingual and this site ships in 18 languages. Chat in whatever language you like.
Point it at something real.
Open the console and put a frontier model to work — free, no strings.
Launch the chatNo signup · No card