GPT-5.6 Terra vs Kimi K2 0905

    Comparison

    As of August 20, 2026, Kimi K2 0905 is 78% cheaper per million tokens than GPT-5.6 Terra. GPT-5.6 Terra is $2.00 / $12.00 per million input/output tokens versus Kimi K2 0905 at $0.60 / $2.50. Sources: https://developers.openai.com/api/docs/pricing and https://platform.kimi.com/docs/pricing/chat

    Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Moonshot AI pricing (https://platform.kimi.com/docs/pricing/chat)

    GPT-5.6 Terra

    OpenAI

    $14.00blended / 1M

    Input

    $2.00

    Output

    $12.00

    1.1M ctx|Proprietary
    78%
    cheaper
    Better value

    Kimi K2 0905

    Moonshot AI

    $3.10blended / 1M

    Input

    $0.60

    Output

    $2.50

    262.1K ctx|Proprietary
    Save $10.90 per million tokens by choosing Kimi K2 0905 over GPT-5.6 Terra.

    GPT-5.6 Terra vs Kimi K2 0905 comparison

    Token pricing, specs, and benchmarks side by side

    Metric
    GPT-5.6 Terra
    Kimi K2 0905
    Provider
    Provider
    OpenAI
    Moonshot AI
    License
    Proprietary
    Proprietary
    Release Date
    2026-07-09
    2025-09-05
    Pricing (per 1M tokens)
    Input Price+233%
    $2.00
    $0.60
    Output Price+380%
    $12.00
    $2.50
    Blended (1M + 1M)
    $14.00
    $3.10
    Model Details
    Context Window
    1.1M
    262.1K
    Max Output Tokens
    128K
    262.1K
    Knowledge Cutoff
    2026-02-16
    N/A
    Throughput
    34.88545641142904 tok/s
    N/A
    Benchmarks
    92.9%
    75.8%
    77.3%
    69.6%
    69.6%
    53.9%
    1521.61
    87.5%
    43.1%
    83.9%
    53.1%
    80.7%
    84.9%
    53.3%
    72%
    90.2%
    86.5%
    94.5%
    89.1%
    0.8%
    62.3%
    65.3%
    30%
    67.6%
    52.9%
    23.2%
    41.3%
    24.7%
    65.3%
    49.2%
    43.4%
    82.9%
    86.7%
    82.5%
    89.6%
    14.5%
    50.2%
    56.3%
    47%
    48.9%
    60.6%
    76.2%
    Benchmark Wins
    GPT-5.6 Terra 2|0 Kimi K2 0905

    Verdict

    GPT-5.6 Terra vs Kimi K2 0905: the bottom line

    Kimi K2 0905 offers significantly lower pricing, while GPT-5.6 Terra leads on benchmark performance. Your choice depends on whether cost efficiency or raw capability matters more for your use case.

    GPT-5.6 Terra vs Kimi K2 0905 FAQ

    Which is cheaper, GPT-5.6 Terra or Kimi K2 0905?

    As of August 20, 2026, Kimi K2 0905 is 78% cheaper on blended LLM API pricing. Kimi K2 0905 costs $0.60 per million input tokens and $2.50 per million output tokens ($3.10 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://platform.kimi.com/docs/pricing/chat. The cheapest LLM for your app still depends on how many output tokens you generate.

    How much does GPT-5.6 Terra vs Kimi K2 0905 cost per million tokens?

    GPT-5.6 Terra OpenAI API pricing is $2.00 input and $12.00 output per million tokens via OpenAI. Kimi K2 0905 Moonshot AI API pricing is $0.60 input and $2.50 output per million tokens via Moonshot AI. 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 Kimi K2 0905?

    GPT-5.6 Terra has a published SWE-bench Verified score of 75.2%. Kimi K2 0905 does not have that eval on this page yet.

    What is the context window for GPT-5.6 Terra vs Kimi K2 0905?

    GPT-5.6 Terra supports a 1M token context window, while Kimi K2 0905 supports 262K 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 Kimi K2 0905?

    GPT-5.6 Terra leads on 2 of 2 shared benchmarks versus Kimi K2 0905's 0 wins. 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 Kimi K2 0905 better for production use?

    Both GPT-5.6 Terra and Kimi K2 0905 are production API models. For cost-sensitive production traffic, Kimi K2 0905 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 Kimi K2 0905 in my app?

    Yes. Call GPT-5.6 Terra through OpenAI and Kimi K2 0905 through Moonshot AI 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 Kimi K2 0905 pricing data?

    List rates are the latest published OpenAI API pricing and Moonshot AI API pricing, quoted per million tokens. Official rate sheets: https://developers.openai.com/api/docs/pricing and https://platform.kimi.com/docs/pricing/chat. 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 Kimi K2 0905?

    GPT-5.6 Terra supports up to 128K output tokens per request, while Kimi K2 0905 supports up to 262K 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 Kimi K2 0905?

    GPT-5.6 Terra has a measured throughput of approximately 34.88545641142904 tokens/second. Throughput data for Kimi K2 0905 is not yet available. 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 Kimi K2 0905 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 Kimi K2 0905 from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.

    GPT-5.6 Terra vs Kimi K2 0905 pricing

    This comparison covers API pricing, context window, throughput, and benchmark scores. GPT-5.6 Terra costs $2.00/M input and $12.00/M output. Kimi K2 0905 costs $0.60/M input and $2.50/M output.

    Rank both on the LLM leaderboard, SWE-bench, and Humanity's Last Exam.

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