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Three fixes made one React test file 43% faster without changing the tests.
Scott Cooper
GPT-5.6 Sol
Frontier model for complex professional work.
Specs
Model
- Family
- GPT-5
- Variant
- 5.6 Sol
- Weights
- Proprietary
Limits
- Context
- 1,050,000 tokens
- Max output
- 128,000 tokens
Modalities
- Input
- Text Image PDF
- Output
- Text
Pricing
- Input
- $4 / 1M
- Output
- $20 / 1M
- Cache read
- $0.4 / 1M
- Cache write
- $5 / 1M
Capabilities
- Reasoning
- Yes
- Reasoning control
- Effort levels
- Tool calling
- Yes
- Attachments
- Yes
Dates
- Released
- 9 Jul 2026
- Knowledge cutoff
- 16 Feb 2026
Articles
All articlessigh.dev
Introducing DataBench
DataBench v1: 100 realistic analytical tasks across Q&A and open-ended prompts, run in a synthetic Hex workspace — built because existing analytics benchmarks test "overspecified pub trivia" rather than the vague, directional questions people actually ask.
Hex@_hex_tech
Introducing Toast 1
Meet Toast 1, Mixedbread's search agent for knowledge-intensive tasks, matching or outperforming Claude Opus 5 and GPT-5.6 Sol while being up to 10× cheaper and 12× faster.
Mixedbread Team
Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
A new speed class for frontier intelligence, turning speed into a competitive advantage.
OpenAI
Advancing the price-performance frontier with GPT-5.6
By making every layer more efficient, OpenAI is delivering stronger performance per dollar across more enterprise workloads.
OpenAI
Getting the most out of GPT-5.6: Sol, Terra, and Luna
Your Codex subscription now comes with 3 main models, Sol, Terra, and Luna, each independently trained and served, with reasoning dials.
Cerebras@cerebras
Practical multi-agent orchestration in Codex
GPT-5.6 Sol gets especially interesting when it has a team to work with.
eric provencher@pvncher
GPT-5.6: Frontier intelligence that scales with your ambition
We’re launching the GPT‑5.6 family of models for general availability following our limited preview: our new flagship, Sol, alongside Terra, a balanced model for everyday work, and Luna, our most cost-efficient model.
OpenAI
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