Anthropic API Alternatives

On Novita AI, MiniMax-M3.1-Flash cuts the 10,000-input + 1,000-output example from Claude Opus 5.5’s $0.06000 to $0.00210 and DeepSeek V4.1 Flash outputs 169.0 tokens/s; no alternative matches Claude’s 61.4% HLE, with GPT-6.1 Sol closest at 51.4%.

Updated · 17 sources · Methodology

NeedPickWhy
Lowest example costMiniMax-M3.1-Flash · Novita AI$0.002107
Fastest measured outputDeepSeek V4.1 Flash 1017 (Max)169.0 tokens/s2
Highest HLE among alternativesGPT-6.1 Sol (High)HLE 51.4% / 61.4%91

Capabilities and serving conditions

ProviderOfficial context (tokens)Context on Novita AI (tokens)Output speed (tokens/s)AA · HLE
Claude Opus 5.5 (Max, Default Fallback)1,000,0006Not on Novita AI96.8161.4%1
DeepSeek V4.1 Flash 1017 (Max)1,000,000141,048,5767169.0243.3%2
GLM-5.3 (Max)1,000,000151,048,576798.2342.3%3
Kimi K3 (Max)1,048,576161,048,576752.7446.9%4
MiniMax-M3.1-Flash1,000,000171,000,0007116.2548.0%5
GPT-6.1 Sol (High)1,050,00010Not on Novita AI54.7951.4%9
Gemini 3.8 Flash (High)1,048,57613Not on Novita AI132.21147.8%11

Prices and request cost

ProviderInput / 1M tokensOutput / 1M tokensEstimated request cost
Claude Opus 5.5 (Max, Default Fallback) · Anthropic6$4.00$20.00$0.06000
DeepSeek V4.1 Flash 1017 (Max) · Novita AI7$0.30$1.20$0.00420
GLM-5.3 (Max) · Novita AI7$1.40$4.40$0.01840
Kimi K3 (Max) · Novita AI7$3.00$15.00$0.04500
MiniMax-M3.1-Flash · Novita AI78$0.15$0.60$0.00210
GPT-6.1 Sol (High) · OpenAI10$2.00$10.00$0.03000
Gemini 3.8 Flash (High) · Google12$0.75$3.75$0.01125
Cost example: 10,000 input + 1,000 billed output tokens
Claude Opus 5.5 (Max, Default Fallback)$0.06000
DeepSeek V4.1 Flash 1017 (Max)$0.00420
GLM-5.3 (Max)$0.01840
Kimi K3 (Max)$0.04500
MiniMax-M3.1-Flash$0.00210
GPT-6.1 Sol (High)$0.03000
Gemini 3.8 Flash (High)$0.01125

Options, strengths and limitations

  1. MiniMax-M3.1-Flash · Novita AI

    The lowest-cost replacement here: on Novita AI it bills $0.15 input and $0.60 output per 1M tokens, so the example request drops from $0.06000 on Claude Opus 5.5 to $0.00210.1757

    Context (M tokens)
    1
    Output speed (tokens/s)
    116.2
    Request cost ($)
    0.0021

    Strengths

    Keeps Claude’s 1,000,000-token context on Novita AI and outputs 116.2 tokens/s, faster than Claude’s 96.8.1757

    Limitations

    Its 48.0% HLE is 13.4 points below Claude’s 61.4%, so reasoning-heavy prompts need re-testing before a switch.1757

    1757

  2. DeepSeek V4.1 Flash 1017 (Max) · Novita AI

    On Novita AI at $0.30 input and $1.20 output per 1M tokens, the example request costs $0.00420, about one-fourteenth of Claude Opus 5.5’s $0.06000.1427

    Context (M tokens)
    1
    Output speed (tokens/s)
    169.0
    Request cost ($)
    0.0042

    Strengths

    The fastest model in this set at 169.0 tokens/s, about 1.7× Claude’s 96.8.1427

    Limitations

    Its 43.3% HLE trails Claude’s 61.4% by 18.1 points.1427

    1427

  3. Gemini 3.8 Flash (High)

    Through Google’s Gemini API, the example request costs $0.01125 at $0.75 input and $3.75 output per 1M tokens.131112

    Context (M tokens)
    1.048576
    Output speed (tokens/s)
    132.2
    Request cost ($)
    0.01125

    Strengths

    Outputs 132.2 tokens/s, second only to DeepSeek here, with a 1,048,576-token official context.131112

    Limitations

    Text rates are promotional until 2026-12-31 and rise to $1.50 input and $7.50 output per 1M tokens from 2027-01-01; HLE is 47.8% versus Claude’s 61.4%.131112

    131112

  4. GLM-5.3 (Max) · Novita AI

    On Novita AI at $1.40 input and $4.40 output per 1M tokens, the example request costs $0.01840, under a third of Claude Opus 5.5’s $0.06000.1537

    Context (M tokens)
    1
    Output speed (tokens/s)
    98.2
    Request cost ($)
    0.0184

    Strengths

    Novita AI serves it with a 1,048,576-token context and up to 131,072 output tokens.1537

    Limitations

    The lowest HLE in this set at 42.3%, 19.1 points below Claude, even though its 98.2 tokens/s output is slightly above Claude’s 96.8.1537

    1537

  5. GPT-6.1 Sol (High)

    At OpenAI’s $2.00 input and $10.00 output per 1M tokens, the example request costs $0.03000, half of Claude Opus 5.5’s.109

    Context (M tokens)
    1.05
    Output speed (tokens/s)
    54.7
    Request cost ($)
    0.03

    Strengths

    The highest HLE among the alternatives at 51.4%, with a 1,050,000-token official context.109

    Limitations

    Still 10.0 points below Claude on HLE at 54.7 tokens/s output; prompts above 272,000 input tokens are billed at 2× input and 1.5× output.109

    109

  6. Kimi K3 (Max) · Novita AI

    On Novita AI at $3.00 input and $15.00 output per 1M tokens, the example request costs $0.04500, the smallest saving here at 25% below Claude Opus 5.5.1647

    Context (M tokens)
    1.048576
    Output speed (tokens/s)
    52.7
    Request cost ($)
    0.045

    Strengths

    Novita AI serves its full 1,048,576-token official context.1647

    Limitations

    The slowest output in this set at 52.7 tokens/s, with 46.9% HLE versus Claude’s 61.4%.1647

    1647

Methodology and sources

Claude Opus 5.5 is the baseline. HLE and output speed come from each model’s named AA configuration and describe the model, not a specific hosted route. DeepSeek, GLM, Kimi and MiniMax prices and served context come from Novita AI’s serverless catalog; Claude, GPT and Gemini use first-party API prices. The cost example uses 10,000 input and 1,000 billed output tokens.

Costs are estimates at listed rates for uncached synchronous requests, not measured invoices; billed output includes reasoning. Tax, retries, discounts and negotiated capacity are excluded. Novita AI publishes this page using public sources, without a private workload benchmark.

Official context uses each developer’s model documentation or model card; the Novita AI column shows the context limit Novita AI serves for the same model.10137

Alternative cards are ordered by the uncached example cost, lowest first; Claude Opus 5.5 appears only as the baseline row in the tables. HLE and output speed are separate choices, so the cheapest replacement is not ranked as the strongest model.

  1. Artificial Analysis · Claude Opus 5.5 (Max, Default Fallback)
  2. Artificial Analysis · DeepSeek V4.1 Flash 1017 (Max)
  3. Artificial Analysis · GLM-5.3 (Max)
  4. Artificial Analysis · Kimi K3 (Max)
  5. Artificial Analysis · MiniMax-M3.1-Flash
  6. Official API pricing · Claude Opus 5.5 (max with fallback)
  7. Novita AI · model catalog: prices and context
  8. Official API pricing · MiniMax-M3.1-Flash
  9. Artificial Analysis · GPT-6.1 Sol (High)
  10. OpenAI · GPT-6.1 Sol
  11. Artificial Analysis · Gemini 3.8 Flash (High)
  12. Google · Gemini API
  13. Google · Gemini 3.8 Flash
  14. DeepSeek · official model context
  15. GLM · official model context
  16. Kimi · official model context
  17. MiniMax · official model context

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