Claude: upcoming dates

Upcoming dates: 2 · All pins: 22

Next: Claude Haiku 5.5 Released, October 14, 2026.

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Upcoming

AI09/28/2026@TechDesk
Claude Haiku 5.5 Released
San Francisco, California, United StatesAnthropic
Starts 10/14/2026ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins81% CONFIDENCEOverall confidence: 81%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterin 10 daysEstimated: Anthropic's^[2][5][6] 28 September Sonnet 5.5 post says Claude^[3] Haiku 5.5 "will join the Claude 5.5 family in the coming weeks" and TechCrunch^[4] says it gave no firm date; last generation, Anthropic's own pages date Sonnet 4.5 to 29 September 2025 and Haiku 4.5 to 15 October 2025, 16 days later, and 16 days after Sonnet 5.5 is Wednesday 14 October 2026, the same weekday Haiku 4.5 launched.
Anthropic's Claude Haiku 5.5, the small, low-cost model of the Claude 5.5 family, is expected in mid-October 2026 after Anthropic said it would follow Opus 5.5 and Sonnet 5.5 "in the coming weeks".
AI09/20/2026@OddsDesk
The Top AI Model of 2026 Is Decided
Starts 12/31/2026SCHEDULEDDate confidence: SCHEDULEDGiven as scheduledHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all SCHEDULED pins75% CONFIDENCEOverall confidence: 75%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterin 88 daysThe market is settled on the ranking as it stands on December 31, 2026 and expires that day at 15:00 UTC, so the date is fixed by the market’s own terms.^[1]
Kalshi
Kalshi
Kalshi settles its year-end ranking market on which lab holds the top AI model on December 31, 2026 — the exchange’s biggest AI book at 11.5M contracts. On 20 September 2026 Claude led at 71.5%, ahead of ChatGPT at 13.6%, Gemini at 8.9% and Grok at 4.1%.

Recent

AI09/28/2026@TechDesk
Claude Sonnet 5.5 Released
San Francisco, California, United StatesAnthropic
Starts 09/28/2026CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins86% CONFIDENCEOverall confidence: 86%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better6 days agoAnthropic's^[1] announcement is headed "Claude^[4] Sonnet 5.5 September 28, 2026" and says it "is now available on all platforms"; the model page lists "Released September 28, 2026", and TechCrunch^[2] (11:00 AM PDT, September 28, 2026) and CNBC^[3] ("Anthropic on Monday released") agree.
Anthropic releases Claude Sonnet 5.5, the second model in its Claude 5.5 family, which it says runs more than 30% faster than Sonnet 5 and costs up to 30% less per task at the same $2 and $10 per million token prices.

Related tags

Upcoming

AI09/28/2026@TechDesk

Claude Haiku 5.5 Released

San Francisco, California, United States

Anthropic

Starts 10/14/2026ESTIMATED81% CONFIDENCEin 10 daysEstimated: Anthropic's^[2][5][6] 28 September Sonnet 5.5 post says Claude^[3] Haiku 5.5 "will join the Claude 5.5 family in the coming weeks" and TechCrunch^[4] says it gave no firm date; last generation, Anthropic's own pages date Sonnet 4.5 to 29 September 2025 and Haiku 4.5 to 15 October 2025, 16 days later, and 16 days after Sonnet 5.5 is Wednesday 14 October 2026, the same weekday Haiku 4.5 launched.

Anthropic's Claude Haiku 5.5, the small, low-cost model of the Claude 5.5 family, is expected in mid-October 2026 after Anthropic said it would follow Opus 5.5 and Sonnet 5.5 "in the coming weeks".

AI09/20/2026@OddsDesk

The Top AI Model of 2026 Is Decided

Starts 12/31/2026SCHEDULED75% CONFIDENCEin 88 daysThe market is settled on the ranking as it stands on December 31, 2026 and expires that day at 15:00 UTC, so the date is fixed by the market’s own terms.^[1]

Kalshi

Kalshi settles its year-end ranking market on which lab holds the top AI model on December 31, 2026 — the exchange’s biggest AI book at 11.5M contracts. On 20 September 2026 Claude led at 71.5%, ahead of ChatGPT at 13.6%, Gemini at 8.9% and Grok at 4.1%.

Recent

AI09/28/2026@TechDesk

Claude Sonnet 5.5 Released

San Francisco, California, United States

Anthropic

Starts 09/28/2026CONFIRMED86% CONFIDENCE6 days agoAnthropic's^[1] announcement is headed "Claude^[4] Sonnet 5.5 September 28, 2026" and says it "is now available on all platforms"; the model page lists "Released September 28, 2026", and TechCrunch^[2] (11:00 AM PDT, September 28, 2026) and CNBC^[3] ("Anthropic on Monday released") agree.

Anthropic releases Claude Sonnet 5.5, the second model in its Claude 5.5 family, which it says runs more than 30% faster than Sonnet 5 and costs up to 30% less per task at the same $2 and $10 per million token prices.