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OpenAI timeline

Every model launch, feature release, outage, usage-limit change and price move we have tracked, newest first. Each links to its sources.

Models, 90 days1Confirmed launches
Features, 90 days5Products and updates
Incidents, 90 days1From status pages and reports
Limits and pricing7Changes in 90 days

Model lineup

Every OpenAI model in our catalogue, newest first, with context and list price per million tokens (input / output). Compare all prices

Sep 2026GPT-6 LunaEfficient · 1.05M ctx$0.10 / $0.50
Sep 2026GPT-6 SolFrontier · 1.05M ctx$2.00 / $10.00
Sep 2026GPT-6 AstraFrontier · 1.05M ctx$10.00 / $50.00
Jul 2026GPT-5.6 SolFrontier · 1M ctx$4.00 / $20.00
Jul 2026GPT-5.6 TerraBalanced · 1M ctx$2.50 / $15.00
Jul 2026GPT-5.6 LunaEfficient · 1M ctx$1.00 / $6.00
Apr 2026GPT-5.5Flagship · 1M ctx$5.00 / $30.00
Apr 2026GPT-5.5 ProReasoning · 1M ctx$30.00 / $180.00
Mar 2026GPT-5.4 miniEfficient · 1M ctx$0.75 / $4.50
Mar 2026GPT-5.4 nanoEfficient · 1M ctx$0.20 / $1.25
Aug 2025gpt-oss-120bOpen · 128K ctxOpen weights
Aug 2025gpt-oss-20bOpen · 128K ctxOpen weights
Aug 2025GPT-5Legacy · 400K ctx$1.25 / $10.00Retired
Apr 2025o3Reasoning · 200K ctx$2.00 / $8.00
Apr 2025GPT-4.1Legacy · 1M ctx$2.00 / $8.00Retired

Timeline

Milestones first. Minor items (small updates, brief status-page incidents, posts without news) are one tap away.

September 2026

  1. month
    GPT-6 Luna releasedEfficient · 1.05M context · $0.10 in / $0.50 out per 1M
  2. month
    GPT-6 Sol releasedFrontier · 1.05M context · $2.00 in / $10.00 out per 1M
  3. month
    GPT-6 Astra releasedFrontier · 1.05M context · $10.00 in / $50.00 out per 1M

August 2026

  1. 18 Aug
    OpenAI launches ChatGPT version for teensFeatures · New product or feature
  2. 13 Aug
    OpenAI resets Codex and ChatGPT Work usage limitsLimits and pricing · Usage limits raised
  3. 11 Aug
    OpenAI launches ChatGPT desktop app for LinuxFeatures · New product or feature
  4. 11 Aug
    OpenAI resets Codex and ChatGPT Work usage limitsLimits and pricing · Usage limits raised
  5. 8 Aug
    OpenAI resets Codex and ChatGPT Work usage limits for paid usersLimits and pricing · Usage limits raised
  6. 7 Aug
    OpenAI updates GPT-5.6 Sol in ChatGPT and limits free users to GPT-5.6 LunaFeatures · New flagship model
  7. 6 Aug
    OpenAI AI smart speaker reportedly priced $300 to $400Features · New product or feature
  8. 4 Aug
    Apple widens trade secrets case against OpenAIOutages and incidents · Security incident
  9. 3 Aug
    Congressional offices rely on ChatGPT for drafting and researchFeatures · Product update
  10. 1 Aug
    OpenAI announces Astra, a next major model familyModels · New model generation from a lab
  11. 1 Aug
    OpenAI resets Codex and ChatGPT Work usage limitsLimits and pricing · Usage limits raised

July 2026

  1. 30 Jul
    OpenAI cuts GPT-5.6 Luna prices by 80 percentLimits and pricing · Price cut of 30% or more
  2. 30 Jul
    OpenAI says GPT-5.6 Sol tops Opus 5 on ARC-AGI-3 with API settingsResearch · Research release
  3. 29 Jul
    OpenAI resets Codex and ChatGPT Work usage limitsLimits and pricing · Usage limits raised
  4. 28 Jul
    OpenAI resets Codex and ChatGPT Work usage limits for paid usersLimits and pricing · Usage limits raised
  5. month
    GPT-5.6 Sol releasedFrontier · 1M context · $4.00 in / $20.00 out per 1M
  6. month
    GPT-5.6 Terra releasedBalanced · 1M context · $2.50 in / $15.00 out per 1M
  7. month
    GPT-5.6 Luna releasedEfficient · 1M context · $1.00 in / $6.00 out per 1M

April 2026

  1. month
    GPT-5.5 releasedFlagship · 1M context · $5.00 in / $30.00 out per 1M
  2. month
    GPT-5.5 Pro releasedReasoning · 1M context · $30.00 in / $180.00 out per 1M

March 2026

  1. month
    GPT-5.4 mini releasedEfficient · 1M context · $0.75 in / $4.50 out per 1M
  2. month
    GPT-5.4 nano releasedEfficient · 1M context · $0.20 in / $1.25 out per 1M

August 2025

  1. month
    gpt-oss-120b releasedOpen · 128K context
  2. month
    gpt-oss-20b releasedOpen · 128K context
  3. month
    GPT-5 releasedLegacy · 400K context · $1.25 in / $10.00 out per 1M · retired

April 2025

  1. month
    o3 releasedReasoning · 200K context · $2.00 in / $8.00 out per 1M
  2. month
    GPT-4.1 releasedLegacy · 1M context · $2.00 in / $8.00 out per 1M · retired

Stories come from the Wire from July 2026 on; earlier model releases come from our catalogue and are dated to the month. OpenAI on the Vikshy Score