Sourced frontier AI model releases and dated price and deprecation notices. https://modelrumors.ai/feed.xml 2026-11-06T00:00:00Z ModelRumors.ai Editorial urn:modelrumors:alert:gemini-4-argon-dec1-price-stepup 2026-11-05T00:00:00Z

Introductory $2.00 / $10.00 per 1M rate ends Nov 30, 2026; the standard rate becomes $4.00 / $20.00 per 1M on Dec 1, 2026. Recommended action: Budget twice the Gemini 4 Argon token spend from Dec 1, or compare Gemini 3.8 Flash ($0.75 / $3.75 through Dec 31) and Claude Sonnet 5.5 ($2 / $10).

urn:modelrumors:alert:gpt-56-sol-nov30-promo-end 2026-11-05T00:00:00Z

GPT-5.6 Sol's promotional $4.00 / $20.00 per 1M price runs until Nov 30, 2026. Recommended action: Compare GPT-6.1 Sol ($2 / $10 per 1M for prompts up to 272K tokens) before the promotion ends.

urn:modelrumors:alert:gemini-38-flash-jan1-price-stepup 2026-11-05T00:00:00Z

Promotional $0.75 / $3.75 per 1M rate runs through Dec 31, 2026; it becomes $1.50 / $7.50 per 1M on Jan 1, 2027. Recommended action: Finish cost-sensitive batch runs before Dec 31, 2026, and re-compare against GPT-6.1 Terra ($1 / $5) and DeepSeek V4.1-Flash ($0.15 / $0.60 off-peak) in January.

urn:modelrumors:alert:deepseek-v4-pro-transition 2026-11-05T00:00:00Z

DeepSeek stated on Sep 10, 2026 that V4-Pro API service continues until DeepSeek V4.1-Pro launches (no date announced). Recommended action: Use deepseek-flash (V4.1-Flash-1017) for coding and general tasks, or self-host the MIT weights if you need pinned V4-Pro-0813 behavior.

urn:modelrumors:alert:openai-2027-04-retirements 2026-11-05T00:00:00Z

OpenAI announced its next retirement wave for Apr 1, 2027, about six months ahead. Recommended action: Check OpenAI's deprecation table for pinned snapshots and plan migrations before Apr 1, 2027.

urn:modelrumors:alert:anthropic-retirement-dates 2026-11-05T00:00:00Z

Anthropic lists a 'not sooner than' retirement date 12 months after each model's release, for example Oct 7, 2027 for Claude Haiku 5.5. Recommended action: Pin model IDs in production and review Anthropic's deprecation table each quarter.

urn:modelrumors:release:openai:gpt-6-rosalind:2026-10-30 2026-10-30T00:00:00Z

OpenAI shipped GPT-6 Rosalind (trusted access only) on 2026-10-30. Current lab verdict: ADOPT NOW · FRESH RELEASE.

urn:modelrumors:release:google:gemini-4-carbon:2026-10-28 2026-10-28T00:00:00Z

Google DeepMind shipped Gemini 4 Carbon (trusted access only) on 2026-10-28. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:openai:gpt-6-1-terra:2026-10-26 2026-10-26T00:00:00Z

OpenAI shipped GPT-6.1 Terra (API release) on 2026-10-26. Current lab verdict: ADOPT NOW · FRESH RELEASE.

urn:modelrumors:release:deepseek:deepseek-v4-1-flash-1017:2026-10-17 2026-10-17T00:00:00Z

DeepSeek shipped DeepSeek V4.1-Flash-1017 (open weights) on 2026-10-17. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:meta:muse-spark-open:2026-10-15 2026-10-15T00:00:00Z

Meta shipped Muse Spark Open (open weights) on 2026-10-15. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:google:gemini-4-argon:2026-10-13 2026-10-13T00:00:00Z

Google DeepMind shipped Gemini 4 Argon (API release) on 2026-10-13. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:meta:muse-wonder:2026-10-12 2026-10-12T00:00:00Z

Meta shipped Muse Wonder (public API preview) on 2026-10-12. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:anthropic:claude-haiku-5-5:2026-10-07 2026-10-07T00:00:00Z

Anthropic shipped Claude Haiku 5.5 (API release) on 2026-10-07. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:google:gemini-4-argon:2026-09-30 2026-09-30T00:00:00Z

Google DeepMind shipped Gemini 4 Argon (trusted access only) on 2026-09-30. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:openai:gpt-6-1-sol:2026-09-29 2026-09-29T00:00:00Z

OpenAI shipped GPT-6.1 Sol (API release) on 2026-09-29. Current lab verdict: ADOPT NOW · FRESH RELEASE.

urn:modelrumors:release:anthropic:claude-sonnet-5-5:2026-09-28 2026-09-28T00:00:00Z

Anthropic shipped Claude Sonnet 5.5 (API release) on 2026-09-28. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:openai:gpt-6-sol-and-luna:2026-09-22 2026-09-22T00:00:00Z

OpenAI shipped GPT-6 Sol and Luna (API release) on 2026-09-22. Current lab verdict: ADOPT NOW · FRESH RELEASE.

urn:modelrumors:release:anthropic:claude-opus-5-5:2026-09-22 2026-09-22T00:00:00Z

Anthropic shipped Claude Opus 5.5 (API release) on 2026-09-22. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:xai:grok-4-7:2026-09-21 2026-09-21T00:00:00Z

xAI shipped Grok 4.7 (API release) on 2026-09-21. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:deepseek:deepseek-v4-1-flash:2026-09-10 2026-09-10T00:00:00Z

DeepSeek shipped DeepSeek V4.1-Flash (open weights) on 2026-09-10. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:openai:gpt-6-astra:2026-09-03 2026-09-03T00:00:00Z

OpenAI shipped GPT-6 Astra (API release) on 2026-09-03. Current lab verdict: ADOPT NOW · FRESH RELEASE.

urn:modelrumors:release:google:gemini-3-8-flash:2026-09-02 2026-09-02T00:00:00Z

Google DeepMind shipped Gemini 3.8 Flash (API release) on 2026-09-02. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:meta:muse-spark-1-3:2026-09-02 2026-09-02T00:00:00Z

Meta shipped Muse Spark 1.3 (public API preview) on 2026-09-02. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:anthropic:claude-fable-5-1:2026-09-01 2026-09-01T00:00:00Z

Anthropic shipped Claude Fable 5.1 (API release) on 2026-09-01. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:google:gemini-3-7-flash:2026-08-13 2026-08-13T00:00:00Z

Google DeepMind shipped Gemini 3.7 Flash (API release) on 2026-08-13. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:deepseek:deepseek-v4-pro-0813:2026-08-13 2026-08-13T00:00:00Z

DeepSeek shipped DeepSeek V4-Pro-0813 (open weights) on 2026-08-13. Current lab verdict: MID-CYCLE.

urn:modelrumors:release:xai:grok-4-6:2026-08-12 2026-08-12T00:00:00Z

xAI shipped Grok 4.6 (API release) on 2026-08-12. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:meta:muse-glimmer-30b:2026-08-10 2026-08-10T00:00:00Z

Meta shipped Muse Glimmer 30B (open weights) on 2026-08-10. Current lab verdict: PAST TYPICAL GAP.

urn:modelrumors:release:meta:muse-spark-1-2:2026-08-05 2026-08-05T00:00:00Z

Meta shipped Muse Spark 1.2 (public API preview) on 2026-08-05. Current lab verdict: PAST TYPICAL GAP.