GPT-5.6 Sol (Azure)

Orange AI's August 26, 2026 guide describes OpenAI's GPT-5.6 Sol release with an architecture framed around "Speculative Decoding 3.0," pairing a high-concurrency Draft Head that speculates 8–16 candidate token sequences in parallel with a Target Verification Engine that validates them in a single forward pass. The pie Orange AI is an independent third-party guide site rather than an OpenAI primary, so the specific TTFT and speculative-decoding claims are uncited and should be treated as commentary rather than verified benchmarks, and the piece mixes model-capability narrative with a separate ChatGPT Ads monetization rollout that is

Microsoft announced on July 9, 2026, that GPT-5.6 Sol, GPT-5.6 Terra, and GPT-5.6 are generally available in Microsoft Foundry. The announcement explicitly names the exact Sol variant and makes it a direct model-focused update rather than a gateway or inference-provider claim. Microsoft says the GPT-5.6 series is available through Standard Global and Standard Data Zones, with the announcement also linking to GPT-5.6 pricing. The same release introduced an Asia-Pacific Data Zone and generally available production-agent features including hosted agents, toolboxes, and publishing to Microsoft 3

OpenAI announced a limited preview of the GPT-5.6 family on June 26, 2026, with Sol as the flagship, alongside balanced Terra and low-cost Luna tiers. GPT-5.6 Sol ships with a hardened safety stack targeting higher-risk activity, sensitive cyber requests, and repeated misuse. OpenAI is previewing capabilities with a small group of trusted partners coordinated with the U.S. government before broader availability in the coming weeks. The preview highlights GPT-5.6 Sol as OpenAI's strongest model to date, featuring a new max reasoning effort and an ultra mode that orchestrates multiple subagents for demanding agentic tasks. Early evaluations show improved agentic performance in coding, biology, and cybersecurity, with full results to be published in the system card at general availability. Terra reportedly matches GPT-5.5 at half the cost, while Luna targets the lowest price tier in the lineup.

Foundry Map's "gpt-5.6-sol Azure regions (September 2026)" page documents the Azure deployment footprint of the GPT-5.6 Sol model, listing 26 regions across the US, EU, and APAC with five deployment types including Data Zone Provisioned, Data Zone Managed, and Standard. Every region entry shares a version stamp of 2026 Because the input/output pricing columns are not populated in the excerpt, Foundry Map cannot corroborate per-1M retail rates for the Azure variant, and the page is a third-party tracker rather than a Microsoft Learn primary source, so the regional and lifecycle figures should be treated as a planning reference pending

BenchmarkList's GPT-5.6 Sol evaluation page aggregates 196 benchmark rows across agentic, reasoning, and search-augmented evaluations, with version-stamped result dates spanning 2026-07-09 through 2026-08-28 and per-1M pricing listed at $5.00 input / $30.00 output. Notable field-leading scores include 92.2% on BrowseCo Because the pricing columns and the Azure retail rate are not independently corroborated by a Microsoft primary source in the supplied evidence, the $5.00/$30.00 figure should be treated as a tracker-reported reference rather than an authoritative Azure retail price. The benchmark aggregation nevertheless gives develop