Claude Mythos 5 vs Phi 4 Mini

    Comparison

    As of August 20, 2026, Phi 4 Mini is 99% cheaper per million tokens than Claude Mythos 5. Claude Mythos 5 is $10.00 / $50.00 per million input/output tokens versus Phi 4 Mini at $0.08 / $0.35. Sources: https://platform.claude.com/docs/en/about-claude/pricing and https://openrouter.ai/api/v1/models

    Sources: Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); OpenRouter pricing (https://openrouter.ai/api/v1/models)

    Claude Mythos 5

    Anthropic

    $60.00blended / 1M

    Input

    $10.00

    Output

    $50.00

    1M ctx|Proprietary
    99%
    cheaper
    Better value

    Phi 4 Mini

    Microsoft

    $0.43blended / 1M

    Input

    $0.08

    Output

    $0.35

    131.1K ctx|Open Source
    Save $59.57 per million tokens by choosing Phi 4 Mini over Claude Mythos 5.

    Claude Mythos 5 vs Phi 4 Mini comparison

    Token pricing, specs, and benchmarks side by side

    Metric
    Claude Mythos 5
    Phi 4 Mini
    Provider
    Provider
    Anthropic
    Microsoft
    License
    Proprietary
    Open Source
    Release Date
    2026-06-09
    2025-02-01
    Pricing (per 1M tokens)
    Input Price+12400%
    $10.00
    $0.08
    Output Price+14186%
    $50.00
    $0.35
    Blended (1M + 1M)
    $60.00
    $0.43
    Model Details
    Context Window
    1M
    131.1K
    Max Output Tokens
    128K
    N/A
    Knowledge Cutoff
    N/A
    2024-06-01
    Throughput
    N/A
    N/A
    Benchmarks
    94.6%
    25.2%
    94.6%
    85%
    61.7%
    79%
    67.3%
    69.1%
    64%
    83.7%
    32.8%
    81.2%
    83.1%
    1932
    88.6%
    63.9%
    52.8%
    67.1%
    79.2%
    77.6%
    72.5%
    Swe Bench Multimodal Internal
    59%
    66.4%
    Benchmark Wins
    Claude Mythos 5 1|0 Phi 4 Mini

    Verdict

    Claude Mythos 5 vs Phi 4 Mini: the bottom line

    Phi 4 Mini offers significantly lower pricing, while Claude Mythos 5 leads on benchmark performance. Your choice depends on whether cost efficiency or raw capability matters more for your use case.

    Claude Mythos 5 vs Phi 4 Mini FAQ

    Which is cheaper, Claude Mythos 5 or Phi 4 Mini?

    As of August 20, 2026, Phi 4 Mini is 99% cheaper on blended LLM API pricing. Phi 4 Mini costs $0.08 per million input tokens and $0.35 per million output tokens ($0.43 blended 1M-in + 1M-out). Claude Mythos 5 costs $10.00 / $50.00 per million tokens ($60.00 blended). Sources: https://platform.claude.com/docs/en/about-claude/pricing and https://openrouter.ai/api/v1/models. The cheapest LLM for your app still depends on how many output tokens you generate.

    How much does Claude Mythos 5 vs Phi 4 Mini cost per million tokens?

    Claude Mythos 5 Claude API pricing from Anthropic is $10.00 input and $50.00 output per million tokens via Anthropic. Phi 4 Mini OpenRouter API pricing is $0.08 input and $0.35 output per million tokens via OpenRouter. Use those four numbers, not ChatGPT Plus or Claude Pro subscription prices, when you are comparing APIs.

    Which is better for coding, Claude Mythos 5 or Phi 4 Mini?

    Claude Mythos 5 has a published SWE-bench Verified score of 95.5%. Phi 4 Mini does not have that eval on this page yet.

    What is the context window for Claude Mythos 5 vs Phi 4 Mini?

    Claude Mythos 5 supports a 1M token context window, while Phi 4 Mini supports 131K tokens. Claude Mythos 5 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, Claude Mythos 5 or Phi 4 Mini?

    Claude Mythos 5 leads on 1 of 1 shared benchmarks versus Phi 4 Mini'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 Claude Mythos 5 or Phi 4 Mini better for production use?

    Both Claude Mythos 5 and Phi 4 Mini are production API models. For cost-sensitive production traffic, Phi 4 Mini 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 Claude Mythos 5 and Phi 4 Mini in my app?

    Yes. Call Claude Mythos 5 through Anthropic and Phi 4 Mini through OpenRouter 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 Claude Mythos 5 vs Phi 4 Mini pricing data?

    List rates are the latest published Claude API pricing from Anthropic and OpenRouter API pricing, quoted per million tokens. Official rate sheets: https://platform.claude.com/docs/en/about-claude/pricing and https://openrouter.ai/api/v1/models. 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 Claude Mythos 5 and Phi 4 Mini?

    Claude Mythos 5 supports up to 128K output tokens per request, while Phi 4 Mini supports up to an unspecified number of 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, Claude Mythos 5 or Phi 4 Mini?

    Neither Claude Mythos 5 nor Phi 4 Mini has published throughput data on this page yet. 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 Claude Mythos 5 vs Phi 4 Mini comparison?

    Use the model pickers at the top of this LLM comparison. Search any model in the index and the URL updates. Open Claude Mythos 5 or Phi 4 Mini from the sidebar for the single-model API pricing page, or go back to the LLM pricing table to sort by cheapest blended cost.

    Claude Mythos 5 vs Phi 4 Mini pricing

    This comparison covers API pricing, context window, throughput, and benchmark scores. Claude Mythos 5 costs $10.00/M input and $50.00/M output. Phi 4 Mini costs $0.08/M input and $0.35/M output via OpenRouter.

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

    The index

    All Large Language Models

    280 models across 33 providers. Search or jump to a lab — every model page stays linked here.

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    1 models

    Inception

    1 models

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    1 models

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    1 models

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    1 models

    StepFun

    1 models

    Tencent

    1 models

    Thinking Machines

    1 models

    Unisound

    1 models

    Upstage

    1 models

    Next step

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