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GPT-6.1 Terra

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GPT‑6.1 Terra launched 26 Oct 2026. API pricing is 50 % lower than GPT‑5.6 Terra. It is available to Plus, Pro, Enterprise and Edu users in ChatGPT Work, Codex and to developers as gpt‑6.1‑terra. Internal tests show a factual‑error rate drop from 53.6 % to 16.7 % at low‑effort settings and 4.3 % at maximum effort. At maximum effort the model solves 50.3 % of Terminal‑Bench 4.0 coding tasks versus 21.5 % for GPT‑5.6 Terra. It completes computer‑use tasks – reading screens, clicking and typing – three times faster than GPT‑6 Astra and GPT‑6.1 Sol. It targets routine office work such as drafting replies and browsing applications. GPT-6.1 Terra is a significant step up from GPT-5.6 Terra GPT-6.1 Terra is a significant step up from GPT-6.1 Sol GPT-6.1 Terra sits in the same position as Sonnet in the Anthropic model collection Ted Sanders provided advice on GPT-6.1 Terra GPT-6.1 Terra is probably better than GPT-6 Astra at technical communication GPT-6.1 Terra is probably better than GPT-6.1 Sol at technical communication GPT-6.1 Terra is almost half the price of GPT-6.1 Sol GPT-6.1 Terra is around 10 times the price of GPT-6 Luna OpenAI charges developers half the per‑token price of its predecessor for GPT‑6.1 Terra Artificial Analysis ranks GPT‑6.1 Terra in its Intelligence Index (48 points) GPT‑6.1 Terra has a lower $5 per million output‑token price than GPT‑5.6 Terra’s $12 per million output‑token price GPT‑6.1 Terra has a lower $0.40 per‑task cost than GPT‑5.6 Terra’s $1.40 per‑task cost GPT‑6.1 Terra has a lower Intelligence Index score (48) than Claude Opus 5.5’s score (58) GPT‑6.1 Terra has a lower Intelligence Index score (48) than Claude Sonnet 5.5’s score (56) GPT‑6.1 Terra has a lower Intelligence Index score (48) than Gemini 4 Argon’s score (53) GPT‑6.1 Terra has a lower Intelligence Index score (48) than GPT‑6 Astra’s score (53)· Entity summary generated by Graphiti

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BY VALID-FROM DATE
  1. Ted SandersEXPLAINS POSITION OFGPT-6.1 Terra

    Ted Sanders explains the position of GPT‑6.1 Terra in OpenAI’s GPT lineup

    Current1 sourceTed Sanders
  2. GPT-6.1 TerraTRAILS INAstra

    GPT‑6.1 Terra trails Astra in most other areas

    Current1 sourceAstra
  3. OpenAIHAS POSITION INGPT-6.1 Terra

    OpenAI’s GPT‑6.1 Terra is positioned in OpenAI’s GPT lineup

    Current1 sourceOpenAI
  4. GPT-6.1 TerraHAS LESS SCORE THANGPT-6 Astra

    GPT‑6.1 Terra has a lower Intelligence Index score (48) than GPT‑6 Astra’s score (53)

    Current1 sourceGPT-6 Astra
  5. Artificial AnalysisRANKSGPT-6.1 Terra

    Artificial Analysis ranks GPT‑6.1 Terra in its Intelligence Index (48 points)

    Current1 sourceArtificial Analysis
  6. GPT-6.1 TerraHAS LESS SCORE THANClaude Opus 5

    GPT‑6.1 Terra has a lower Intelligence Index score (48) than Claude Opus 5.5’s score (58)

    Current1 sourceClaude Opus 5
  7. GPT-6.1 TerraHAS LESS SCORE THANGemini 4 Argon

    GPT‑6.1 Terra has a lower Intelligence Index score (48) than Gemini 4 Argon’s score (53)

    Current1 sourceGemini 4 Argon
  8. GPT-6.1 TerraHAS LESS OUTPUT TOKEN PRICE THANGPT-5.6 Terra

    GPT‑6.1 Terra has a lower $5 per million output‑token price than GPT‑5.6 Terra’s $12 per million output‑token price

    Current1 sourceGPT-5.6 Terra
  9. GPT-6.1 TerraHAS LESS PER TASK COST THANGPT-5.6 Terra

    GPT‑6.1 Terra has a lower $0.40 per‑task cost than GPT‑5.6 Terra’s $1.40 per‑task cost

    Current1 sourceGPT-5.6 Terra
  10. GPT-6.1 TerraHAS LESS SCORE THANClaude Sonnet 5

    GPT‑6.1 Terra has a lower Intelligence Index score (48) than Claude Sonnet 5.5’s score (56)

    Current1 sourceClaude Sonnet 5
  11. GPT-6.1 TerraIS BETTER THANGPT-6.1 Sol

    GPT-6.1 Terra is probably better than GPT-6.1 Sol at technical communication

    Current1 sourceGPT-6.1 Sol
  12. GPT-6.1 TerraIS STEP UP FROMGPT-6.1 Sol

    GPT-6.1 Terra is a significant step up from GPT-6.1 Sol

    Current1 sourceGPT-6.1 Sol
  13. GPT-6.1 TerraIS TEN X PRICE OFGPT-6 Luna

    GPT-6.1 Terra is around 10 times the price of GPT-6 Luna

    Current1 sourceGPT-6 Luna
  14. GPT-6.1 TerraIS HALF PRICE OFGPT-6.1 Sol

    GPT-6.1 Terra is almost half the price of GPT-6.1 Sol

    Current1 sourceGPT-6.1 Sol
  15. GPT-6.1 TerraIS STEP UP FROMGPT-5.6 Terra

    GPT-6.1 Terra is a significant step up from GPT-5.6 Terra

    Current1 sourceGPT-5.6 Terra
  16. GPT-6.1 TerraSAME POSITION ASSonnet

    GPT-6.1 Terra sits in the same position as Sonnet in the Anthropic model collection

    Ended 2026-10-301 sourceSonnet
  17. Ted SandersADVISES ONGPT-6.1 Terra

    Ted Sanders provided advice on GPT-6.1 Terra

    Current1 sourceTed Sanders
  18. GPT-6.1 TerraIS BETTER THANGPT-6 Astra

    GPT-6.1 Terra is probably better than GPT-6 Astra at technical communication

    Current1 sourceGPT-6 Astra
  19. GPT-6.1 TerraHALVES API PRICE OFGPT-5.6 Terra

    API prices of GPT-6.1 Terra are half those of GPT-5.6 Terra

    Ended 2026-10-272 sourcesGPT-5.6 Terra
  20. GPT-6.1 TerraMATCHES PERFORMANCE AT TOKEN PRICE RATIO 1 TO 10GPT-6 Astra

    GPT-6.1 Terra matches GPT-6 Astra’s performance at a token price one‑tenth that of GPT-6 Astra on the Agents’ Last Exam benchmark

    Current1 sourceGPT-6 Astra
  21. GPT-6.1 TerraINPUT TOKEN PRICE LOWER THANClaude Sonnet 5

    GPT-6.1 Terra’s input token price is lower than Claude Sonnet 5.5

    Current1 sourceClaude Sonnet 5
  22. GPT-6.1 TerraNEARLY MATCHESGPT-6.1 Sol

    GPT-6.1 Terra nearly matches GPT-6.1 Sol on MMMU-Pro for visual reasoning

    Current1 sourceGPT-6.1 Sol
  23. GPT-6.1 TerraFALLS UNDEROpenAI

    GPT-6.1 Terra falls under OpenAI’s critical safety threshold

    Current1 sourceOpenAI
  24. GPT-6.1 TerraMEETSOpenAI

    GPT-6.1 Terra meets OpenAI’s Critical cybersecurity threshold as defined by the Preparedness Framework

    Current1 sourceOpenAI
  25. GPT-6.1 TerraCOMPUTER CONTROL SPEED IS THREE TIMES FASTER THANGPT-6 Astra

    GPT-6.1 Terra is three times faster at computer control than GPT-6 Astra

    Ended 2026-10-271 sourceGPT-6 Astra
  26. GPT-6.1 TerraFINISHES IN TIME AT THREE TIMES FASTER THANGPT-5.6 Terra

    GPT-6.1 Terra finishes MMU-Pro tasks more than three times faster than GPT-5.6 Terra

    Current1 sourceGPT-5.6 Terra
  27. GPT-6.1 TerraSOLVES MORE TASKS THANGPT-5.6 Terra

    GPT-6.1 Terra solves more tasks in Terminal‑Bench 4.0 than GPT-5.6 Terra

    Current1 sourceGPT-5.6 Terra
  28. GPT-6.1 TerraAVAILABLE INChatGPT Work

    GPT-6.1 Terra is available in ChatGPT Work

    Current1 sourceChatGPT Work
  29. GPT-6.1 TerraIS CLOSEST COMPETITOR TOSonnet

    GPT-6.1 Terra is the closest competitor to Anthropic’s Sonnet series

    Current1 sourceSonnet
  30. GPT-6.1 TerraCLOSE TO SCORE WITHIN FIVE POINTS TOClaude Opus 5

    GPT-6.1 Terra comes within five points of Claude Opus 5.5 at less than a fifth of the estimated cost on Terminal‑Bench‑Science 0.1

    Current1 sourceClaude Opus 5
  31. GPT-6.1 TerraCOST PER TASK IS NINE TIMES LESS THANClaude Opus 5

    GPT-6.1 Terra costs roughly nine times less per task than Claude Opus 5.5

    Current2 sourcesClaude Opus 5
  32. GPT-6.1 TerraHIGHER SCORE THANGPT-6 Luna

    GPT-6.1 Terra scores higher than GPT-6 Luna on the Coding Agent Index v2.0

    Current1 sourceGPT-6 Luna
  33. Artificial AnalysisCALLSGPT-6.1 Terra

    Artificial Analysis calls GPT-6.1 Terra a new benchmark for intelligence per dollar

    Current1 sourceArtificial Analysis
  34. GPT-6.1 TerraOUTPERFORMSGPT-6.1 Sol

    GPT-6.1 Terra outperforms GPT-6.1 Sol on Terminal‑Bench‑Science 0.1

    Ended 2026-10-291 sourceGPT-6.1 Sol
  35. GPT-6.1 TerraAVAILABLE INCodex

    GPT-6.1 Terra is available in Codex

    Current1 sourceCodex
  36. GPT-6.1 TerraTOKEN EFFICIENT MULTIPLIED OVERClaude Opus 5

    GPT-6.1 Terra is more than three times token‑efficient compared to Claude Opus 5.5 at maximum effort

    Current1 sourceClaude Opus 5
  37. GPT-6.1 TerraLOWER SCORE THANGPT-6.1 Sol

    GPT-6.1 Terra scores lower than GPT-6.1 Sol on the Coding Agent Index v2.0

    Ended 2026-10-271 sourceGPT-6.1 Sol
  38. GPT-6.1 TerraDEFENSE RATE IS HIGHER THANGPT-5.6 Terra

    GPT-6.1 Terra has a higher defense rate (98.8%) than GPT-5.6 Terra (96.2%) against indirect prompt injection attacks

    Current1 sourceGPT-5.6 Terra
  39. GPT-6.1 TerraFINISHES TOKENS AT THREE TIMES FASTER THANGPT-6 Astra

    GPT-6.1 Terra finishes tasks in token usage three times faster than GPT-6 Astra

    Ended 2026-10-271 sourceGPT-6 Astra
  40. OpenAIRELEASER OFGPT-6.1 Terra

    OpenAI has released GPT-6.1 Terra

    Current3 sourcesOpenAI

Relations are facts Graphiti extracted from reports, not verbatim quotes. An end date means later reporting showed the relation no longer holds.

Events 1

Source reports 4