Claude Sonnet 5.5 vs GPT-6.1 Terra

aka Sonnet 5.5 vs OpenAI GPT-6.1 Terra

21 posts309 likes39.6K views

  • Author picksClaude Sonnet 5.51–0
  • CheaperGPT-6.1 Terra5/5 postsmedian gap ~36×
  • FasterGPT-6.1 Terra5/5 postsmedian gap ~10×

As stated in each post, not a controlled benchmark.

Posts

21

Same prompt, separate runs

5

Not a controlled comparison: prompts, tools and time differ.

About this matchup

Claude Sonnet 5.5 vs GPT-6.1 Terra in real side-by-side tests: 21 posts from X where both got the same prompt; 9 posts report cost or time. Judge coding ability from the actual outputs.

Sonnet 5.5 vs GPT-6.1 Terra: which is better for coding?

Which is better for coding, Sonnet 5.5 or GPT-6.1 Terra?

Author picks: where the author preferred one of the two, they picked Claude Sonnet 5.5 once and GPT-6.1 Terra never. That covers 1 of the 21 posts here; each post is a different task, so watch the outputs above for the work you care about.

Which is cheaper, Sonnet 5.5 or GPT-6.1 Terra?

5 posts state a cost for both: GPT-6.1 Terra was cheaper in all 5 (median gap ~36×). These are the costs the posts state for each run, not list prices.

Which is faster, Sonnet 5.5 or GPT-6.1 Terra?

5 posts state a time for both: GPT-6.1 Terra was faster in all 5 (median gap ~10×). Times are as stated in each post; tools and settings differ between posts.

Summary

Claude Sonnet 5.5 and GPT-6.1 Terra appear together in 21 posts on X: event horizons, Claude Sonnet 5.5 vs GPT-6.1 Terra (@nabendu82), cinematic cruise ship at sea, three models (@jpshrodinger), light-cycle bot duel, Sonnet vs Terra (@ashishkaloge), 3D supercar, Terra vs Sonnet vs Sol vs Kimi (@marcthecreatorr), miniature Japanese village, Terra vs Sonnet (@itsfazley) and 16 more. 10 of them are part of larger lineups with other models. The 5 most-viewed examples: In @notjazii's candy obstacle-course platformer, Terra vs Sonnet, GPT-6.1 Terra was cheaper ($1.00 vs $18.00) and faster (10 min vs 1 h 30 min), as reported in the post. In @marcthecreatorr's 3D supercar, Terra vs Sonnet vs Sol vs Kimi, GPT-6.1 Terra was faster (5 min vs 29 min), as reported in the post. In @jan_volad's pickle rocket launching from a jar in Minecraft, GPT-6.1 Terra was cheaper ($0.12 vs $4.91) and faster (2.6 min vs 32.8 min), as reported in the post. In @jpshrodinger's 3D big sea fish, three models, GPT-6.1 Terra was cheaper ($0.03 vs $0.16), as reported in the post. In @daveeyyy_'s WebGPU jelly dam diorama, Claude Sonnet 5.5 vs GPT-6.1 Terra, GPT-6.1 Terra was cheaper ($0.09 vs $15.00) and faster (3 min vs 2 h), as reported in the post. The table below lists all 6 posts with numbers for both.

What each post reports

Claude Sonnet 5.5 vs GPT-6.1 Terra: cost, time and tokens as stated in each post
PostModelTimeCostTokensAuthor’s verdictPost
Event horizons, Claude Sonnet 5.5 vs GPT-6.1 Terra@nabendu82Claude Sonnet 5.5————X post
Event horizons, Claude Sonnet 5.5 vs GPT-6.1 Terra@nabendu82GPT-6.1 Terra————X post
Cinematic cruise ship at sea, three models@jpshrodingerClaude Sonnet 5.5————X post
Cinematic cruise ship at sea, three models@jpshrodingerGPT-6.1 Terra—$0.04——X post
Light-cycle bot duel, Sonnet vs Terra@ashishkalogeClaude Sonnet 5.5————X post
Light-cycle bot duel, Sonnet vs Terra@ashishkalogeGPT-6.1 Terra————X post
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrGPT-6.1 Terra5 min———X post
3D supercar, Terra vs Sonnet vs Sol vs Kimi@marcthecreatorrClaude Sonnet 5.529 min———X post
Miniature Japanese village, Terra vs Sonnet@itsfazleyGPT-6.1 Terra—$0.24——X post
Miniature Japanese village, Terra vs Sonnet@itsfazleyClaude Sonnet 5.5————X post
Three.js scene rebuild, five models ranked@itsgarycheungClaude Sonnet 5.5————X post
Three.js scene rebuild, five models ranked@itsgarycheungGPT-6.1 Terra————X post
3D big sea fish, three models@jpshrodingerClaude Sonnet 5.5—$0.16——X post
3D big sea fish, three models@jpshrodingerGPT-6.1 Terra—$0.03——X post
Blender trebuchet, GPT-6.1 Terra against earlier builds@eridotsGPT-6.1 Terra————X post
Blender trebuchet, GPT-6.1 Terra against earlier builds@eridotsClaude Sonnet 5.5————X post
One-shot Star Fox game, GPT-6.1 Terra vs Claude Sonnet 5.5@BeauJohnson89GPT-6.1 Terra70 s$0.04——X post
One-shot Star Fox game, GPT-6.1 Terra vs Claude Sonnet 5.5@BeauJohnson89Claude Sonnet 5.512 min$1.43——X post
Rube Goldberg bell machine, two mid-tier models@kairox36Claude Sonnet 5.5————X post
Rube Goldberg bell machine, two mid-tier models@kairox36GPT-6.1 Terra————X post
Exploded view, GPT-6.1 Terra vs Claude Sonnet 5.5@exploraX_GPT-6.1 Terra————X post
Exploded view, GPT-6.1 Terra vs Claude Sonnet 5.5@exploraX_Claude Sonnet 5.5————X post
WebGPU jelly dam diorama, Claude Sonnet 5.5 vs GPT-6.1 Terra@daveeyyy_Claude Sonnet 5.52 h$15.00——X post
WebGPU jelly dam diorama, Claude Sonnet 5.5 vs GPT-6.1 Terra@daveeyyy_GPT-6.1 Terra3 min$0.09——X post
Entering six invoices by computer use, three models@invest_morganGPT-6.1 Terra————X post
Entering six invoices by computer use, three models@invest_morganClaude Sonnet 5.5————X post
Four ducks from one prompt, four models@aiRobertDailyGPT-6.1 Terra————X post
Four ducks from one prompt, four models@aiRobertDailyClaude Sonnet 5.5————X post
Three.js galloping zebra, three models@AI_ScreeningGPT-6.1 Terra———The poster says Claude keeps cooking even in the mid tier and Haiku feels better than GPT-6.1 Terra.X post
Three.js galloping zebra, three models@AI_ScreeningClaude Sonnet 5.5————X post
Miami night ride, Claude Sonnet 5.5 vs GPT-6.1 Terra@Im_pritam18Claude Sonnet 5.5———Author’s pickX post
Miami night ride, Claude Sonnet 5.5 vs GPT-6.1 Terra@Im_pritam18GPT-6.1 Terra————X post
Pelican SVG with GPT-6.1 Terra at two effort levels@xiangxiang103GPT-6.1 Terra————X post
Pelican SVG with GPT-6.1 Terra at two effort levels@xiangxiang103Claude Sonnet 5.527.4 min———X post
Snowman in a snowy forest, Sonnet vs Terra@ivanainaiClaude Sonnet 5.5————X post
Snowman in a snowy forest, Sonnet vs Terra@ivanainaiGPT-6.1 Terra————X post
Kangaroo riding a bike upside down in SVG@leo114119GPT-6.1 Terra————X post
Kangaroo riding a bike upside down in SVG@leo114119Claude Sonnet 5.5————X post
Pickle rocket launching from a jar in Minecraft@jan_voladGPT-6.1 Terra2.6 min$0.12——X post
Pickle rocket launching from a jar in Minecraft@jan_voladClaude Sonnet 5.532.8 min$4.91——X post
Candy obstacle-course platformer, Terra vs Sonnet@notjaziiGPT-6.1 Terra10 min$1.00——X post
Candy obstacle-course platformer, Terra vs Sonnet@notjaziiClaude Sonnet 5.51 h 30 min$18.00——X post

Only numbers stated in each post. “—” means the post doesn’t say.

Quick facts

ModelVendorReleasedInput $/1M tokensOutput $/1M tokensContext (tokens)Official links
Claude Sonnet 5.5Anthropic2026-09-28$2$101,000,000Model docs
GPT-6.1 TerraOpenAI2026-10-26Announcement

From the vendors’ official pages, checked 2026-10-26. Standard API list prices; each value links its source and a blank cell could not be verified. The archive’s own numbers above are what each post states.

Who won where

2

Prompts shown in the posts

Generate an animated SVG of a pelican riding a bicycle — @xiangxiang103

Models

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