GPT-4.1 mini vs Claude Haiku 4.5 vs Mistral Medium 3
Too close to call on our weighted score (GPT-4.1 mini 60, Claude Haiku 4.5 58, Mistral Medium 3 53). The right pick depends on what you value most.
OpenAIGPT-4.1 mini
60/100- ECI135.0
- Price$0.40 / $1.60
- Context1.05M
AnthropicClaude Haiku 4.5
58/100- ECI142.4
- Price$1.00 / $5.00
- Context200K
Mistral AIMistral Medium 3
53/100- ECI134.1
- Price$0.40 / $2.00
- Context131K
Too close to call
It is close. Our weighted score puts them within 2 points (GPT-4.1 mini 60/100, Claude Haiku 4.5 58/100, Mistral Medium 3 53/100), so choose by what matters most for your work: Claude Haiku 4.5 for raw capability, GPT-4.1 mini on price and GPT-4.1 mini for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
- CapabilityClaude Haiku 4.5Capabilities Index (ECI): Claude Haiku 4.5 142.4 · GPT-4.1 mini 135.0 · Mistral Medium 3 134.1
- Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · Mistral Medium 3 $0.80 · Claude Haiku 4.5 $2.00 per 1M tokens (3:1 blend)
- Longest contextGPT-4.1 miniGPT-4.1 mini 1,047,576 · Claude Haiku 4.5 200,000 · Mistral Medium 3 131,072 tokens
- Widest inputsGPT-4.1 mini and Claude Haiku 4.5GPT-4.1 mini: Text, Images, PDFs · Claude Haiku 4.5: Text, Images, PDFs · Mistral Medium 3: Text, Images
- Self-hostingNo open weightsAll three are available only through APIs
| Measure | Weight | GPT-4.1 mini | Claude Haiku 4.5 | Mistral Medium 3 |
|---|---|---|---|---|
| CapabilityCapabilities Index (ECI) | 50% | 59 | 69 | 58 |
| Price | 25% | 57 | 36 | 54 |
| Inputs & features | 15% | 70 | 80 | 50 |
| Context window | 10% | 61 | 32 | 24 |
| Overall | 100% | 60/100 | 58/100 | 53/100 |
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | GPT-4.1 miniOpenAI | Claude Haiku 4.5Anthropic | Mistral Medium 3Mistral AI |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | 135.0 | 142.4 (best) | 134.1 |
| ECI rank | #115 of 148 | #90 of 148 (best) | #117 of 148 |
| GPQA DiamondGraduate-level science questions | 65.9% | 71.2% (best) | 59.5% |
| FrontierMath Tiers 1–3Research-level mathematics | 6.7% | — | — |
| OTIS Mock AIME 2024–2025Competition mathematics | 44.7% | 66.7% (best) | 32.2% |
| SimpleQA VerifiedShort factual questions | 12.7% | 13.2% (best) | — |
| Price per million tokens | |||
| Input | $0.40 (best) | $1.00 | $0.40 (best) |
| Output | $1.60 (best) | $5.00 | $2.00 |
| Cached input | $0.10 | $0.10 | — |
| Blended (3:1) | $0.70 (best) | $2.00 | $0.80 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official OpenAI API | Official Anthropic API | Official Mistral API |
| Limits | |||
| Context window | 1,047,576 tokens (best) | 200,000 tokens | 131,072 tokens |
| Max output | 32,768 tokens | 64,000 tokens | 131,072 tokens (best) |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | Yes | Yes | No |
| Audio | No | No | No |
| Video | No | No | No |
| Reasoning | No | Yes | No |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Proprietary |
| API model ID | gpt-4.1-mini | claude-haiku-4-5 | mistral-medium-2505 |
| API providers | 24 | 34 (best) | 5 |
| Released | Apr 14, 2025 | Oct 15, 2025 | May 7, 2025 |
| Knowledge cutoff | Apr 2024 | Feb 28, 2025 | May 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- GPT-4.1 mini$7.20
- Claude Haiku 4.5$20.00
- Mistral Medium 3$8.00
Which should you choose?
Which is better: GPT-4.1 mini, Claude Haiku 4.5 or Mistral Medium 3?
It is close. Our weighted score puts them within 2 points (GPT-4.1 mini 60/100, Claude Haiku 4.5 58/100, Mistral Medium 3 53/100), so choose by what matters most for your work: Claude Haiku 4.5 for raw capability, GPT-4.1 mini on price and GPT-4.1 mini for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.
Which is cheaper, GPT-4.1 mini, Claude Haiku 4.5 or Mistral Medium 3?
GPT-4.1 mini is cheaper at $0.40 input / $1.60 output per million tokens (official OpenAI API price). Mistral Medium 3 costs $0.40 input / $2.00 output per million tokens (official Mistral API price); Claude Haiku 4.5 costs $1.00 input / $5.00 output per million tokens (official Anthropic API price). At a typical mix of three input tokens to one output token, that is $0.70 per million tokens for GPT-4.1 mini versus $0.80 for Mistral Medium 3 (1.1× as much) and $2.00 for Claude Haiku 4.5 (2.9× as much).
Which scores higher on benchmarks?
Claude Haiku 4.5 scores higher on the Capabilities Index (ECI): Claude Haiku 4.5 142.4 (#90 of 148), GPT-4.1 mini 135.0 (#115 of 148) and Mistral Medium 3 134.1 (#117 of 148). Their confidence ranges do not overlap (139.5–144.3 vs 131.2–136.6), so the gap is a real one. On individual benchmarks: GPQA Diamond — Claude Haiku 4.5 71.2%, GPT-4.1 mini 65.9%, Mistral Medium 3 59.5%; OTIS Mock AIME 2024–2025 — Claude Haiku 4.5 66.7%, GPT-4.1 mini 44.7%, Mistral Medium 3 32.2%.
Which is better for coding?
There are no published SWE-bench Verified results for GPT-4.1 mini, Claude Haiku 4.5 and Mistral Medium 3 yet, so there is no like-for-like coding score. On overall capability, Claude Haiku 4.5 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?
GPT-4.1 mini has the largest context window at 1,047,576 tokens, against 200,000 for Claude Haiku 4.5 and 131,072 for Mistral Medium 3. Maximum output per response: GPT-4.1 mini up to 32,768, Claude Haiku 4.5 up to 64,000, Mistral Medium 3 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
GPT-4.1 mini accepts text, images and PDFs; Claude Haiku 4.5 accepts text, images and PDFs; Mistral Medium 3 accepts text and images. GPT-4.1 mini handles the widest range of inputs.
Are any of these open source?
No. GPT-4.1 mini, Claude Haiku 4.5 and Mistral Medium 3 are proprietary and only available through APIs and apps.
Which is newer?
Claude Haiku 4.5 is the newest, released Oct 15, 2025. Mistral Medium 3 came out May 7, 2025; GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: GPT-4.1 mini Apr 2024, Claude Haiku 4.5 Feb 28, 2025, Mistral Medium 3 May 2025.
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 Oct 4, 2026.
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