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Comparison · 3 models · Updated Nov 2, 2026

DeepSeek V4.1 Flash 1017 vs Muse Wonder vs Claude Haiku 5.5

Claude Haiku 5.5 comes out ahead, 83 to 79 and 68 on our weighted score, and it is the cheaper option too.

  1. DeepSeek

    DeepSeek V4.1 Flash 1017

    Released Oct 17, 2026New

    79/100
    • ECI158.8
    • Price$0.15 / $0.60
    • Context1M
    Full specs Remove DeepSeek V4.1 Flash 1017

  2. Meta

    Muse Wonder

    Released Oct 12, 2026New

    68/100
    • ECI161.7
    • Price$4.00 / $20.00
    • Context1.05M
    Full specs Remove Muse Wonder
  3. Our pick

    Anthropic

    Claude Haiku 5.5

    Released Oct 7, 2026New

    83/100
    • ECI160.4
    • Price$0.10 / $0.50
    • Context1M
    Full specs Remove Claude Haiku 5.5
01 — Verdict

Claude Haiku 5.5 is our pick

Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against DeepSeek V4.1 Flash 1017 (79) and Muse Wonder (68). It leads on price. Muse Wonder wins on capability and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityMuse WonderCapabilities Index (ECI): Muse Wonder 161.7 · Claude Haiku 5.5 160.4 · DeepSeek V4.1 Flash 1017 158.8
  • Lowest priceClaude Haiku 5.5Claude Haiku 5.5 $0.20 · DeepSeek V4.1 Flash 1017 $0.263 · Muse Wonder $8.00 per 1M tokens (3:1 blend)
  • Longest contextMuse WonderMuse Wonder 1,048,576 · DeepSeek V4.1 Flash 1017 1,000,000 · Claude Haiku 5.5 1,000,000 tokens
  • Widest inputsMuse WonderDeepSeek V4.1 Flash 1017: Text, Images · Muse Wonder: Text, Images, PDFs, Audio, Video · Claude Haiku 5.5: Text, Images, PDFs
  • Self-hostingDeepSeek V4.1 Flash 1017Publishes downloadable weights (MIT)
How the score is built
MeasureWeightDeepSeek V4.1 Flash 1017Muse WonderClaude Haiku 5.5
CapabilityCapabilities Index (ECI)50%879189
Price25%74780
Inputs & features15%7010080
Context window10%606160
Overall100%79/10068/10083/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

DeepSeek V4.1 Flash 1017 vs Muse Wonder vs Claude Haiku 5.5 specifications side by side
SpecificationDeepSeek V4.1 Flash 1017DeepSeekMuse WonderMetaClaude Haiku 5.5Anthropic
Capability
Capabilities Index (ECI)158.8161.7 (best)160.4
ECI rank#19 of 165#13 of 165 (best)#14 of 165
GPQA DiamondGraduate-level science questions93.2% (best)—89.7%
FrontierMath Tiers 1–3Research-level mathematics71.2%82.1% (best)75.1%
OTIS Mock AIME 2024–2025Competition mathematics99.4% (best)99.4% (best)98.9%
SimpleQA VerifiedShort factual questions42.5% (best)—23.8%
Price per million tokens
Input$0.15$4.00$0.10 (best)
Output$0.60$20.00$0.50 (best)
Cached input$0.003 (best)$0.20$0.01
Blended (3:1)$0.263$8.00$0.20 (best)
Long-context rateSame rateSame rateOver 100K: $0.50 / $2.50
Price sourceOfficial DeepSeek APIOfficial Meta APIOfficial Anthropic API
Limits
Context window1,000,000 tokens1,048,576 tokens (best)1,000,000 tokens
Max output384,000 tokens (best)131,072 tokens128,000 tokens
Inputs and features
TextYesYesYes
ImagesYesYesYes
PDFsNoYesYes
AudioNoYesNo
VideoNoYesNo
ReasoningYeslow · high · maxYesminimal · low · medium · high · xhigh · maxYeslow · medium · high · xhigh · max
Tool callingYesYesYes
Structured outputYesYesYes
Availability
WeightsOpenMITProprietaryProprietary
API model IDdeepseek-flashmuse-wonder-1.0claude-haiku-5-5
API providers40 (best)933
ReleasedOct 17, 2026Oct 12, 2026Oct 7, 2026
Knowledge cutoffMay 2025—Jun 2026
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • DeepSeek V4.1 Flash 1017$2.70
  • Muse Wonder$80.00
  • Claude Haiku 5.5$2.00
04 — Questions

Which should you choose?

Which is better: DeepSeek V4.1 Flash 1017, Muse Wonder or Claude Haiku 5.5?

Claude Haiku 5.5 is the better all-round choice, scoring 83/100 against DeepSeek V4.1 Flash 1017 (79) and Muse Wonder (68). It leads on price. Muse Wonder wins on capability and inputs & features. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, DeepSeek V4.1 Flash 1017, Muse Wonder or Claude Haiku 5.5?

Claude Haiku 5.5 is cheaper at $0.10 input / $0.50 output per million tokens (official Anthropic API price). DeepSeek V4.1 Flash 1017 costs $0.15 input / $0.60 output per million tokens (official DeepSeek API price); Muse Wonder costs $4.00 input / $20.00 output per million tokens (official Meta API price). At a typical mix of three input tokens to one output token, that is $0.20 per million tokens for Claude Haiku 5.5 versus $0.263 for DeepSeek V4.1 Flash 1017 (1.3× as much) and $8.00 for Muse Wonder (40× as much).

Which scores higher on benchmarks?

Muse Wonder scores higher on the Capabilities Index (ECI): Muse Wonder 161.7 (#13 of 165), Claude Haiku 5.5 160.4 (#14 of 165) and DeepSeek V4.1 Flash 1017 158.8 (#19 of 165). The confidence ranges of the top two overlap (159.2–164.6 vs 157.3–163.8), so treat the gap as small. On individual benchmarks: FrontierMath Tiers 1–3 — Muse Wonder 82.1%, Claude Haiku 5.5 75.1%, DeepSeek V4.1 Flash 1017 71.2%; OTIS Mock AIME 2024–2025 — DeepSeek V4.1 Flash 1017 99.4%, Muse Wonder 99.4%, Claude Haiku 5.5 98.9%.

Which is better for coding?

There are no published SWE-bench Verified results for DeepSeek V4.1 Flash 1017, Muse Wonder and Claude Haiku 5.5 yet, so there is no like-for-like coding score. On overall capability, Muse Wonder leads, which tends to carry over to coding, but test on your own codebase. All three support tool calling for agent workflows.

Which has the bigger context window?

Muse Wonder has the largest context window at 1,048,576 tokens, against 1,000,000 for DeepSeek V4.1 Flash 1017 and 1,000,000 for Claude Haiku 5.5. Maximum output per response: DeepSeek V4.1 Flash 1017 up to 384,000, Muse Wonder up to 131,072, Claude Haiku 5.5 up to 128,000 tokens.

Which can read images, PDFs, audio or video?

DeepSeek V4.1 Flash 1017 accepts text and images; Muse Wonder accepts text, images, PDFs, audio and video; Claude Haiku 5.5 accepts text, images and PDFs. Muse Wonder handles the widest range of inputs.

Are any of these open source?

DeepSeek V4.1 Flash 1017 publishes its weights (MIT) and can be self-hosted; Muse Wonder and Claude Haiku 5.5 is proprietary.

Which is newer?

DeepSeek V4.1 Flash 1017 is the newest, released Oct 17, 2026. Muse Wonder came out Oct 12, 2026; Claude Haiku 5.5 came out Oct 7, 2026. Knowledge cutoff: DeepSeek V4.1 Flash 1017 May 2025, Claude Haiku 5.5 Jun 2026.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.

05 — Keep comparing

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