GPT OSS 20B High vs LongCat-Flash-Lite

    Comparison

    As of August 20, 2026, LongCat-Flash-Lite is 17% cheaper per million tokens than GPT OSS 20B High. GPT OSS 20B High is $0.10 / $0.50 per million input/output tokens versus LongCat-Flash-Lite at $0.10 / $0.40. Sources: https://developers.openai.com/api/docs/pricing and https://anotherwrapper.com/tools/llm-pricing

    Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); AnotherWrapper LLM pricing (https://anotherwrapper.com/tools/llm-pricing)

    GPT OSS 20B High

    OpenAI

    $0.60blended / 1M

    Input

    $0.10

    Output

    $0.50

    131.1K ctx|Open Source
    17%
    cheaper
    Better value

    LongCat-Flash-Lite

    Meituan

    $0.50blended / 1M

    Input

    $0.10

    Output

    $0.40

    256K ctx|Open Source
    Save $0.10 per million tokens by choosing LongCat-Flash-Lite over GPT OSS 20B High.

    GPT OSS 20B High vs LongCat-Flash-Lite comparison

    Token pricing, specs, and benchmarks side by side

    Metric
    GPT OSS 20B High
    LongCat-Flash-Lite
    Provider
    Provider
    OpenAI
    Meituan
    License
    Open Source
    Open Source
    Release Date
    2025-08-05
    2026-02-05
    Pricing (per 1M tokens)
    Input Price0%
    $0.10
    $0.10
    Output Price+25%
    $0.50
    $0.40
    Blended (1M + 1M)
    $0.60
    $0.50
    Model Details
    Context Window
    131.1K
    256K
    Max Output Tokens
    131.1K
    128K
    Knowledge Cutoff
    N/A
    N/A
    Throughput
    100 tok/s
    500 tok/s
    Benchmarks
    74.2%
    66.8%
    46.0%
    34.4%
    98.7%
    63.2%
    72.2%
    96.8%
    85.5%
    82.5%
    1.4%
    78.3%
    Benchmark Wins
    GPT OSS 20B High 2|0 LongCat-Flash-Lite

    Verdict

    GPT OSS 20B High vs LongCat-Flash-Lite: the bottom line

    LongCat-Flash-Lite offers significantly lower pricing, while GPT OSS 20B High leads on benchmark performance. Your choice depends on whether cost efficiency or raw capability matters more for your use case.

    GPT OSS 20B High vs LongCat-Flash-Lite FAQ

    Which is cheaper, GPT OSS 20B High or LongCat-Flash-Lite?

    As of August 20, 2026, LongCat-Flash-Lite is 17% cheaper on blended LLM API pricing. LongCat-Flash-Lite costs $0.10 per million input tokens and $0.40 per million output tokens ($0.50 blended 1M-in + 1M-out). GPT OSS 20B High costs $0.10 / $0.50 per million tokens ($0.60 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 OSS 20B High vs LongCat-Flash-Lite cost per million tokens?

    GPT OSS 20B High OpenAI API pricing is $0.10 input and $0.50 output per million tokens via OpenAI. LongCat-Flash-Lite Meituan API pricing is $0.10 input and $0.40 output per million tokens via Meituan. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.

    Which is better for coding, GPT OSS 20B High or LongCat-Flash-Lite?

    LongCat-Flash-Lite has a published SWE-bench Verified score of 54.4%. GPT OSS 20B High does not have that eval on this page yet.

    What is the context window for GPT OSS 20B High vs LongCat-Flash-Lite?

    GPT OSS 20B High supports a 131K token context window, while LongCat-Flash-Lite supports 256K tokens. LongCat-Flash-Lite 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 OSS 20B High or LongCat-Flash-Lite?

    GPT OSS 20B High leads on 2 of 2 shared benchmarks versus LongCat-Flash-Lite'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 OSS 20B High or LongCat-Flash-Lite better for production use?

    Both GPT OSS 20B High and LongCat-Flash-Lite are production API models. For cost-sensitive production traffic, LongCat-Flash-Lite 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 OSS 20B High and LongCat-Flash-Lite in my app?

    Yes. Call GPT OSS 20B High through OpenAI and LongCat-Flash-Lite through Meituan 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 OSS 20B High vs LongCat-Flash-Lite pricing data?

    List rates are the latest published OpenAI API pricing and Meituan 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 OSS 20B High and LongCat-Flash-Lite?

    GPT OSS 20B High supports up to 131K output tokens per request, while LongCat-Flash-Lite supports up to 128K 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 OSS 20B High or LongCat-Flash-Lite?

    GPT OSS 20B High runs at approximately 100 tokens/second while LongCat-Flash-Lite runs at 500 tokens/second. LongCat-Flash-Lite 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 OSS 20B High vs LongCat-Flash-Lite comparison?

    Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open GPT OSS 20B High or LongCat-Flash-Lite 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 OSS 20B High vs LongCat-Flash-Lite pricing

    This comparison covers API pricing, context window, throughput, and benchmark scores. GPT OSS 20B High costs $0.10/M input and $0.50/M output. LongCat-Flash-Lite costs $0.10/M input and $0.40/M output.

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

    The index

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