Which is cheaper, GPT-5.6 Terra or Seed 2.0 Pro?
As of August 20, 2026, Seed 2.0 Pro is 75% cheaper on blended LLM API pricing. Seed 2.0 Pro costs $0.50 per million input tokens and $3.00 per million output tokens ($3.50 blended 1M-in + 1M-out). GPT-5.6 Terra costs $2.00 / $12.00 per million tokens ($14.00 blended). Sources: https://developers.openai.com/api/docs/pricing and https://anotherwrapper.com/tools/llm-pricing. The cheapest LLM for your app still depends on how many output tokens you generate.
How much does GPT-5.6 Terra vs Seed 2.0 Pro cost per million tokens?
GPT-5.6 Terra OpenAI API pricing is $2.00 input and $12.00 output per million tokens via OpenAI. Seed 2.0 Pro ByteDance API pricing is $0.50 input and $3.00 output per million tokens via ByteDance. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.
Which is better for coding, GPT-5.6 Terra or Seed 2.0 Pro?
Seed 2.0 Pro leads on SWE-bench Verified: GPT-5.6 Terra at 75.2% vs Seed 2.0 Pro at 76.5%. SWE-bench measures real GitHub fixes; LiveCodeBench measures contest programming.
What is the context window for GPT-5.6 Terra vs Seed 2.0 Pro?
GPT-5.6 Terra supports a 1M token context window, while Seed 2.0 Pro supports 256K tokens. GPT-5.6 Terra offers a larger context window. Filling a larger window bills more input tokens, so the cheaper-per-million model can still cost more on long documents.
Which model performs better on benchmarks, GPT-5.6 Terra or Seed 2.0 Pro?
GPT-5.6 Terra and Seed 2.0 Pro are tied across 4 shared benchmarks. Check the table for category-level strengths. Check the comparison table for GPQA Diamond, SWE-bench, MMLU, HLE, and the other evals we track. Token price and benchmark score together are the usual LLM comparison, not either number alone.
Is GPT-5.6 Terra or Seed 2.0 Pro better for production use?
Both GPT-5.6 Terra and Seed 2.0 Pro are production API models. For cost-sensitive production traffic, Seed 2.0 Pro has better economics on the blended 1M-in + 1M-out scale. For maximum capability, weight the benchmark table for your domain. Many production stacks route cheap models for drafts and a frontier model for the hard turn, which is usually cheaper than sending everything to the expensive API.
Can I switch between GPT-5.6 Terra and Seed 2.0 Pro in my app?
Yes. Call GPT-5.6 Terra through OpenAI and Seed 2.0 Pro through ByteDance with separate API keys, or through a gateway that already wraps both. Keep prompts in tokens, not characters, when you estimate the invoice. AnotherWrapper templates can swap providers without rewriting auth and billing.
How accurate is this GPT-5.6 Terra vs Seed 2.0 Pro pricing data?
List rates are the latest published OpenAI API pricing and ByteDance API pricing, quoted per million tokens. Official rate sheets: https://developers.openai.com/api/docs/pricing and https://anotherwrapper.com/tools/llm-pricing. Prompt caching, batch APIs, and committed-use discounts can change the invoice. Benchmark scores are from official publications and independent evals, updated as new numbers land.
What is the output token limit for GPT-5.6 Terra and Seed 2.0 Pro?
GPT-5.6 Terra supports up to 128K output tokens per request, while Seed 2.0 Pro supports up to 66K output tokens. Output tokens are usually the expensive half of API pricing, so a higher max output cap is a capability, not a discount.
Which model has better throughput, GPT-5.6 Terra or Seed 2.0 Pro?
GPT-5.6 Terra runs at approximately 34.88545641142904 tokens/second while Seed 2.0 Pro runs at 5.593776158213053 tokens/second. GPT-5.6 Terra is faster in raw throughput. Throughput (tokens per second) and time-to-first-token are why two models with the same per-million-token price can still feel different in chat and agents.
How do I switch the models in this GPT-5.6 Terra vs Seed 2.0 Pro comparison?
Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open GPT-5.6 Terra or Seed 2.0 Pro from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.
