OpenAI · Released Aug 7, 2026GPT-5.6 Cyber
Cybersecurity model for authorized vulnerability research and security testing.
- Capability
- —No ECI score yet
- Input
- $12.50per 1M tokens
- Output
- $75.00per 1M tokens
- Context
- 400K128K max output
What it costs
- Input
- $12.50per million tokens
- Output
- $75.00per million tokens
- Cached input
- $1.25per million tokens
- Cache write
- $15.63per million tokens
- Blended (3:1)
- $28.13pricier than 97% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $62.50 |
| Team assistant25M input + 5M output tokens | $687.50 |
| Production app250M input + 50M output tokens | $6,875 |
Official OpenAI API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for GPT-5.6 Cyber yet.
The details
- Lab
- OpenAI
- Released
- Aug 7, 2026
- Knowledge cutoff
- Feb 16, 2026
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- Adjustable effort low · medium · high · xhigh · max
- Tool calling
- Yes
- Structured output
- Yes
- Weights
- Proprietary
- API model ID
gpt-daybreak-red-lateston OpenAI- Availability
- 1 API providerlisted on models.dev
More from OpenAI
About GPT-5.6 Cyber
How much does GPT-5.6 Cyber cost?
GPT-5.6 Cyber costs $12.50 input / $75.00 output per million tokens (official OpenAI API price). Cached input is $1.25 per million tokens, and writing to the cache costs $15.63. At a 3:1 input-to-output mix that is $28.13 per million tokens, more expensive than 97% of the 360 priced models we track.
What is the context window of GPT-5.6 Cyber?
GPT-5.6 Cyber accepts up to 400,000 tokens per request and can write up to 128,000 tokens in one response.
How good is GPT-5.6 Cyber?
Epoch AI has not published a Capabilities Index score for GPT-5.6 Cyber yet.
Is GPT-5.6 Cyber open source?
No. GPT-5.6 Cyber is proprietary; you use it through OpenAI’s API or partner platforms.
What inputs does GPT-5.6 Cyber support?
GPT-5.6 Cyber accepts text and images and replies in text. It is a reasoning model with low, medium, high, xhigh and max effort settings, supports tool calling and can return structured JSON output.
When was GPT-5.6 Cyber released?
OpenAI released GPT-5.6 Cyber on Aug 7, 2026. Its training data runs to Feb 16, 2026.
What are the best alternatives to GPT-5.6 Cyber?
The closest current models from other labs on capability, price and release date are Claude Mythos 5 (Anthropic, $10.00 / $50.00), Fugu Ultra (Sakana AI, $5.00 / $30.00), MAI-Code-1.1-Flash (Microsoft) and Kimi K2.8 Preview (Moonshot AI).