Who ranks #1 on the Posttrainbench Lite leaderboard?
As of August 20, 2026, GPT-5.6 Terra by OpenAI ranks #1 on Posttrainbench Lite at 51.5%. API pricing is $2.00/M input and $12.00/M output.
Posttrainbench Lite
🏆 LeaderboardAs of August 20, 2026, GPT-5.6 Terra is #1 for Posttrainbench Lite at 51.5%. Ranked by the Posttrainbench Lite score 3 models in this index have a published Posttrainbench Lite score. Posttrainbench Lite leaderboard: rank models by Posttrainbench Lite next to live API token prices.
Updated August 20, 2026282 models33 providers
Showing 1–50 of 282 models
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The index
All Large Language Models
282 models across 33 providers. Search or jump to a lab — every model page stays linked here.
OpenAI
51 modelsGPT-5.6 CyberGPT-5.6 LunaGPT-5.6 SolGPT-5.6 TerraGPT-5.5 InstantGPT-5.5GPT-5.5 ProGPT-5.4 miniGPT-5.4 nanoGPT-5.4GPT-5.3 ChatGPT-5.3 CodexGPT-5.2 CodexGPT-5.2GPT-5.2 ProGPT-5.1 CodexGPT-5.1GPT-5.1 Codex HighGPT-5.1 Codex MiniGPT-5.1 HighGPT-5.1 InstantGPT-5.1 MediumGPT-5.1 ThinkingGPT-5 CodexGPT-5GPT-5 HighGPT-5 MediumGPT-5 miniGPT-5 nanoGPT OSS 120BGPT OSS 120B HighGPT OSS 20BGPT OSS 20B Higho3-proo3o4-miniGPT-4.1GPT-4.1 miniGPT-4.1 nanoo3-minio1o1-proo1-minio1-previewGPT-4oGPT-4o miniChatGPT-4o LatestGPT-4oGPT-4 TurboGPT-4GPT-3.5 Turbo
Anthropic
22 modelsClaude Opus 5Claude Sonnet 5Claude Fable 5Claude Mythos 5Claude Opus 4.8Claude Opus 4.7Claude Sonnet 4.6Claude Opus 4.6Claude Opus 4.5Claude Haiku 4.5Claude Sonnet 4.5Claude Opus 4.1Claude Opus 4Claude Sonnet 4Claude 3.7 SonnetClaude 3.5 HaikuClaude 3.5 SonnetClaude 3.5 SonnetClaude 3 HaikuClaude 3 OpusClaude 3 SonnetClaude Mythos Preview
Gemini 3.7 FlashGemini 3.5 Flash-LiteGemini 3.6 FlashGemini 3.5 FlashGemma 4 26B-A4BGemma 4 31BGemini 3.1 Flash-LiteGemini 3.1 ProGemini 3 FlashGemini 3 ProGemma 3n E4B InstructedGemini 2.5 Flash-LiteGemini 2.5 Pro Preview 06-05Gemini 2.5 FlashGemini 2.5 ProGemma 3 12BGemma 3 27BGemma 3 4BGemini 2.0 Flash-LiteGemini 2.0 FlashGemma 2 27BGemini 1.5 FlashGemini 1.5 ProGemini 1.5 Flash 8BGemini 1.0 Pro
Cursor
2 models
xAI
15 models
DeepSeek
16 models
Qwen
38 modelsQwen3.8-27BQwen3.8-2.4T-A95BQwen3.8 MaxQwen3.7 FlashQwen3.7-PlusQwen3.7 MaxQwen3.6-27BQwen3.6-35B-A3BQwen3.6 PlusQwen3.5-9BQwen3.5-122B-A10BQwen3.5-27BQwen3.5-35B-A3BQwen3.5-397B-A17BQwen3 MaxQwen3 VL 235B A22B InstructQwen3 VL 235B A22B ThinkingQwen3 VL 30B A3B InstructQwen3 VL 30B A3B ThinkingQwen3 VL 32B InstructQwen3 VL 4B InstructQwen3 VL 4B ThinkingQwen3 VL 8B InstructQwen3 VL 8B ThinkingQwen3-Next-80B-A3B-InstructQwen3-Next-80B-A3B-ThinkingQwen3-235B-A22B-Thinking-2507Qwen3-235B-A22B-Instruct-2507Qwen3 235B A22BQwen3 30B A3BQwen3 32BQwen3-Coder 480B A35B InstructQwen2.5 VL 72B InstructQwen3-CoderQwQ-32B-PreviewQwen2.5 72B InstructQwen2.5 7B InstructQwen2.5-Coder 32B Instruct
AI21 Labs
2 models
Amazon
5 models
Baidu
1 models
ByteDance
2 models
Cohere
3 models
IBM
1 models
Inception
1 models
inclusionAI
1 models
LG AI Research
1 models
Meituan
4 models
Meta
12 models
Mistral
23 modelsMistral Medium 3.5Mistral Small 4Min istral 3 (3B Reasoning 2512)MiniStral 3 (14B Instruct 2512)Ministral 3 (14B Reasoning 2512)Ministral 3 (3B Instruct 2512)Ministral 3 (8B Instruct 2512)Ministral 3 (8B Reasoning 2512)Mistral Large 3 (675B Instruct 2512)Mistral Large 3Devstral Small 1.1Devstral MediumMistral Small 3.2 24B InstructMagistral MediumMistral Small 3.1 24B BaseMistral Small 3.1 24B InstructMistral Small 3 24B InstructPixtral LargeMinistral 8B InstructMistral SmallPixtral-12BMistral Large 2Mistral NeMo Instruct
Moonshot AI
9 models
Nous Research
1 models
NVIDIA
5 models
Poolside
2 models
Sakana AI
1 models
StepFun
1 models
Tencent
1 models
Thinking Machines
1 models
Unisound
1 models
Upstage
1 models
Xiaomi
3 modelsWhich model leads Posttrainbench Lite right now?
As of August 20, 2026, GPT-5.6 Terra by OpenAI is #1 for Posttrainbench Lite at 51.5%. Ranked by the Posttrainbench Lite score This board also tracks Posttrainbench Lite. Next on the same board: GPT-5.6 Sol and GPT-5.6 Luna. This posttrainbench lite leaderboard ranks models by Posttrainbench Lite. Scores come from public evals. Prices are the live API rates in the table above.
Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)
| Rank | Model | Posttrainbench Lite | Input /M | Output /M |
|---|---|---|---|---|
| 1 | GPT-5.6 Terra | 51.5% | $2.00 | $12.00 |
| 2 | GPT-5.6 Sol | 50.3% | $5.00 | $30.00 |
| 3 | GPT-5.6 Luna | 29.6% | $0.20 | $1.20 |
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Posttrainbench Lite FAQ
What are the top models on Posttrainbench Lite?
The current Posttrainbench Lite ranking as of August 20, 2026 is 1. GPT-5.6 Terra at 51.5%; 2. GPT-5.6 Sol at 50.3%; 3. GPT-5.6 Luna at 29.6%.
Which posttrainbench lite model is the cheapest?
GPT-5.6 Luna is the cheapest scored model on this posttrainbench lite leaderboard at $0.20/M input and $1.20/M output ($1.40 blended). GPT-5.6 Terra still leads Posttrainbench Lite at 51.5%.
Should I always pick the #1 Posttrainbench Lite model?
Not automatically. GPT-5.6 Terra leads Posttrainbench Lite, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Posttrainbench Lite against input/output price, context window, and related evals.
How often is the Posttrainbench Lite leaderboard updated?
Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled August 20, 2026. Treat it as a current index, not a one-off blog post.
What is Posttrainbench Lite?
Posttrainbench Lite is a public LLM eval (the Posttrainbench Lite score). This page ranks models that have published a score, next to live API prices.
Where is the Posttrainbench Lite leaderboard?
This page is the Posttrainbench Lite leaderboard. Models are sorted by Posttrainbench Lite, with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.
How is this Posttrainbench Lite ranking different from the official board?
Official eval pages own the methodology. This page keeps the published Posttrainbench Lite score next to live API $/M so you can pick a production SKU, not only a trophy number.