The AI arena is free today

Open Superagent

GPT-6.1 Terra vs Step 3.7 Flash

GPT-6.1 Terra leads the LLM Stats Score 47.6 to 29.6. Step 3.7 Flash is 4.6x cheaper per token.

OpenAI · StepFun · Updated for 2026

Which is better?

GPT-6.1 Terra leads the overall LLM Stats Score 47.6 to 29.6, ranking #37 overall.

On price, Step 3.7 Flash is roughly 4.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

GPT-6.1 Terra also accepts a larger context window (1,050,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose GPT-6.1 Terra

  • overall performance matters — it scores 47.6 and ranks #37 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you process long inputs — it offers a 1,050,000 token context window
  • you want the most recent training data — it shipped Oct 2026

Choose Step 3.7 Flash

  • cost matters — it's about 4.6x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

GPT-6.1 Terra
OpenAI
Step 3.7 Flash
StepFun
Core performance indexes
LLM Stats Score
47.6
#37
29.6
#153
Reasoning
49.1
#18
29.6
#151
Coding
37.3
#30
19.2
#132
Agents
38.7
#11
13.4
#124
Cost, coverage & limits
Benchmark wins
—
—
Input price
$1.00 / M
$0.20 / M
Output price
$5.00 / M
$1.15 / M
Context window
1,050,000
262,144

Individual benchmarks

9 reported for GPT-6.1 Terra · 4 for Step 3.7 Flash

No common benchmarks found

GPT-6.1 Terra and Step 3.7 Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Step 3.7 Flash costs less

For input processing, GPT-6.1 Terra ($1.00/1M tokens) is 5.0x more expensive than Step 3.7 Flash ($0.20/1M tokens).

For output processing, GPT-6.1 Terra ($5.00/1M tokens) is 4.3x more expensive than Step 3.7 Flash ($1.15/1M tokens).

In conclusion, GPT-6.1 Terra is more expensive than Step 3.7 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri Nov 06 2026 • llm-stats.com
OpenAI
GPT-6.1 Terra
Input tokens$1.00
Output tokens$5.00
Best providerOpenAI
StepFun
Step 3.7 Flash
Input tokens$0.20
Output tokens$1.15
Best providerDeepinfra
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

GPT-6.1 Terra accepts 1,050,000 input tokens compared to Step 3.7 Flash's 262,144 tokens. Step 3.7 Flash can generate longer responses up to 262,144 tokens, while GPT-6.1 Terra is limited to 128,000 tokens.

OpenAI
GPT-6.1 Terra
Input1,050,000 tokens
Output128,000 tokens
StepFun
Step 3.7 Flash
Input262,144 tokens
Output262,144 tokens
Fri Nov 06 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-6.1 Terra and Step 3.7 Flash support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-6.1 Terra

Text
Images
Audio
Video

Step 3.7 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-6.1 Terra is licensed under a proprietary license, while Step 3.7 Flash uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

GPT-6.1 Terra

Proprietary

Closed source

Step 3.7 Flash

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-6.1 Terra was released on 2026-10-26, while Step 3.7 Flash was released on 2026-06-10.

GPT-6.1 Terra is 5 months newer than Step 3.7 Flash.

GPT-6.1 Terra

Oct 26, 2026

1 weeks ago

4mo newer
Step 3.7 Flash

Jun 10, 2026

4 months ago

Knowledge Cutoff

When training data ends

GPT-6.1 Terra has a documented knowledge cutoff of 2026-06-01, while Step 3.7 Flash's cutoff date is not specified.

We can confirm GPT-6.1 Terra's training data extends to 2026-06-01, but cannot make a direct comparison without Step 3.7 Flash's cutoff date.

GPT-6.1 Terra

Jun 2026

Step 3.7 Flash

—

Provider Availability

GPT-6.1 Terra is available from OpenAI. Step 3.7 Flash is available from DeepInfra.

GPT-6.1 Terra

openai logo
OpenAI
Input Price:Input: $1.00/1MOutput Price:Output: $5.00/1M

Step 3.7 Flash

deepinfra logo
Deepinfra
Input Price:Input: $0.20/1MOutput Price:Output: $1.15/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-6.1 Terra and Step 3.7 Flash side-by-side, then vote on the output you prefer.

GPT-6.1 Terra
✓ Preferred
Step 3.7 Flash
Open in Playground

FAQ

Common questions about GPT-6.1 Terra vs Step 3.7 Flash.

Which is better, GPT-6.1 Terra or Step 3.7 Flash?

GPT-6.1 Terra leads the LLM Stats Score 47.6 to 29.6. GPT-6.1 Terra is made by OpenAI and Step 3.7 Flash is made by StepFun. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GPT-6.1 Terra compare to Step 3.7 Flash in benchmarks?

GPT-6.1 Terra scores HealthBench Consensus: 95.1%, HealthBench Professional: 62.7%, Agents' Last Exam: 60.0%, Terminal-Bench-Science 0.1: 58.3%, MentalHealthBench: 55.5%. Step 3.7 Flash scores Terminal-Bench 2.1: 59.5%, SWE-Bench Pro: 56.3%, Humanity's Last Exam (with tools, text-only): 47.2%, GDPval: 45.8%.

Is GPT-6.1 Terra cheaper than Step 3.7 Flash?

Step 3.7 Flash is 5.0x cheaper for input tokens. GPT-6.1 Terra costs $1.00/M input and $5.00/M output via openai. Step 3.7 Flash costs $0.20/M input and $1.15/M output via deepinfra.

What are the context window sizes for GPT-6.1 Terra and Step 3.7 Flash?

GPT-6.1 Terra supports 1.1M tokens and Step 3.7 Flash supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-6.1 Terra and Step 3.7 Flash?

Key differences include LLM Stats Score (47.6 vs 29.6), context window (1.1M vs 262K), input pricing ($1.00 vs $0.20/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6.1 Terra and Step 3.7 Flash?

GPT-6.1 Terra is developed by OpenAI and Step 3.7 Flash is developed by StepFun.

Related comparisons