Compare dated releases from OpenAI, DeepSeek, Google and Anthropic. Launches are verifiable events; vendor benchmark claims are not an independent ranking.
Selected releases through September 10, 2026; not an exhaustive model catalog or a best-model ranking.
Dates without a time use the local date of the event.
Google introduced Gemini 2.5 with an experimental Pro model available through Google AI Studio and Gemini Advanced.
Experimental availability is a different milestone from a later stable release. The original launch post identifies which version was available.
Anthropic introduced Claude Opus 4 and Sonnet 4, offering both direct responses and extended thinking.
The release emphasized coding and longer agent workflows. Those are the vendor's product priorities, not proof of a universal winner.
DeepSeek's dated changelog records the release of V4.1 Flash with native visual input support through its API.
This extends the timeline beyond the initial reasoning-model launches. Published vendor scores remain separate from independent evaluation.
Selected releases through September 10, 2026; not an exhaustive model catalog or a best-model ranking.
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